40390896 has 120 divisors (see below), whose sum is σ = 130814544. Its totient is φ = 10644480.

The previous prime is 40390879. The next prime is 40390901. The reversal of 40390896 is 69809304.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29916 + ... + 31236.

Almost surely, 2^40390896 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 40390896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65407272).

40390896 is an abundant number, since it is smaller than the sum of its proper divisors (90423648).

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

40390896 is a wasteful number, since it uses less digits than its factorization.

40390896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 40390896 is about 6355.3832299870. The cubic root of 40390896 is about 343.1056178978.

The spelling of 40390896 in words is "forty million, three hundred ninety thousand, eight hundred ninety-six".