11699440 has 80 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 4306176.

The previous prime is 11699423. The next prime is 11699447. The reversal of 11699440 is 4499611.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11699396 and 11699405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11699447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65271 + ... + 65449.

It is an arithmetic number, because the mean of its divisors is an integer number (368280).

Almost surely, 2^11699440 is an apocalyptic number.

11699440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11699440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14731200).

11699440 is an abundant number, since it is smaller than the sum of its proper divisors (17762960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11699440 is a wasteful number, since it uses less digits than its factorization.

11699440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 11699440 is about 3420.4444155694. Note that the first 4 decimals coincide. The cubic root of 11699440 is about 227.0152460537.

It can be divided in two parts, 1169 and 9440, that added together give a square (10609 = 103²).

The spelling of 11699440 in words is "eleven million, six hundred ninety-nine thousand, four hundred forty".