40699776 has 128 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 12072960.

The previous prime is 40699733. The next prime is 40699777. The reversal of 40699776 is 67799604.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40699777) 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, 154621 + ... + 154883.

It is an arithmetic number, because the mean of its divisors is an integer number (942480).

Almost surely, 2^40699776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40699776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60318720).

40699776 is an abundant number, since it is smaller than the sum of its proper divisors (79937664).

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

40699776 is a wasteful number, since it uses less digits than its factorization.

40699776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 40699776 is about 6379.6376072627. The cubic root of 40699776 is about 343.9780047231.

The spelling of 40699776 in words is "forty million, six hundred ninety-nine thousand, seven hundred seventy-six".