40057947 has 24 divisors (see below), whose sum is σ = 61760400. Its totient is φ = 24945408.

The previous prime is 40057937. The next prime is 40057957. The reversal of 40057947 is 74975004.

It is a happy number.

40057947 is a `hidden beast` number, since 40 + 0 + 579 + 47 = 666.

It is an interprime number because it is at equal distance from previous prime (40057937) and next prime (40057957).

It is not a de Polignac number, because 40057947 - 2⁴ = 40057931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40057937) 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, 10879 + ... + 14087.

It is an arithmetic number, because the mean of its divisors is an integer number (2573350).

Almost surely, 2^40057947 is an apocalyptic number.

40057947 is a deficient number, since it is larger than the sum of its proper divisors (21702453).

40057947 is a wasteful number, since it uses less digits than its factorization.

40057947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40057947 is about 6329.1347749910. The cubic root of 40057947 is about 342.1602562785.

The spelling of 40057947 in words is "forty million, fifty-seven thousand, nine hundred forty-seven".