40099056 has 80 divisors (see below), whose sum is σ = 110733984. Its totient is φ = 12460032.

The previous prime is 40099049. The next prime is 40099061. The reversal of 40099056 is 65099004.

It is a happy number.

It is a super-2 number, since 2×40099056² = 3215868584182272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 127956 + ... + 128268.

Almost surely, 2^40099056 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 40099056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55366992).

40099056 is an abundant number, since it is smaller than the sum of its proper divisors (70634928).

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

40099056 is a wasteful number, since it uses less digits than its factorization.

40099056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 40099056 is about 6332.3815425162. The cubic root of 40099056 is about 342.2772622505.

The spelling of 40099056 in words is "forty million, ninety-nine thousand, fifty-six".