40339432 has 64 divisors (see below), whose sum is σ = 94003200. Its totient is φ = 15837120.

The previous prime is 40339393. The next prime is 40339441. The reversal of 40339432 is 23493304.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 40339432.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32373 + ... + 33595.

It is an arithmetic number, because the mean of its divisors is an integer number (1468800).

Almost surely, 2^40339432 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 40339432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47001600).

40339432 is an abundant number, since it is smaller than the sum of its proper divisors (53663768).

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

40339432 is a wasteful number, since it uses less digits than its factorization.

40339432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1282 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 40339432 is about 6351.3330884154. Note that the first 3 decimals coincide. The cubic root of 40339432 is about 342.9598334592.

The spelling of 40339432 in words is "forty million, three hundred thirty-nine thousand, four hundred thirty-two".