13399950 has 48 divisors (see below), whose sum is σ = 33502320. Its totient is φ = 3544320.

The previous prime is 13399949. The next prime is 13399951. The reversal of 13399950 is 5999331.

It is an interprime number because it is at equal distance from previous prime (13399949) and next prime (13399951).

It is a junction number, because it is equal to n+sod(n) for n = 13399899 and 13399908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13399951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23266 + ... + 23834.

It is an arithmetic number, because the mean of its divisors is an integer number (697965).

Almost surely, 2^13399950 is an apocalyptic number.

13399950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13399950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16751160).

13399950 is an abundant number, since it is smaller than the sum of its proper divisors (20102370).

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

13399950 is a wasteful number, since it uses less digits than its factorization.

13399950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 39.

The square root of 13399950 is about 3660.5942140587. The cubic root of 13399950 is about 237.5204783819.

The spelling of 13399950 in words is "thirteen million, three hundred ninety-nine thousand, nine hundred fifty".