40494156 has 12 divisors (see below), whose sum is σ = 94486392. Its totient is φ = 13498048.

The previous prime is 40494151. The next prime is 40494161. The reversal of 40494156 is 65149404.

It is an interprime number because it is at equal distance from previous prime (40494151) and next prime (40494161).

It is a tau number, because it is divible by the number of its divisors (12).

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

It is not an unprimeable number, because it can be changed into a prime (40494151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687245 + ... + 1687268.

It is an arithmetic number, because the mean of its divisors is an integer number (7873866).

Almost surely, 2^40494156 is an apocalyptic number.

It is an amenable number.

40494156 is an abundant number, since it is smaller than the sum of its proper divisors (53992236).

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

40494156 is a wasteful number, since it uses less digits than its factorization.

40494156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374520 (or 3374518 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 40494156 is about 6363.5018661111. The cubic root of 40494156 is about 343.3977541689.

The spelling of 40494156 in words is "forty million, four hundred ninety-four thousand, one hundred fifty-six".