40057971 has 8 divisors (see below), whose sum is σ = 53458944. Its totient is φ = 26681160.

The previous prime is 40057957. The next prime is 40057981. The reversal of 40057971 is 17975004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40057971 - 2¹⁴ = 40041587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40057931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731 + ... + 9116.

It is an arithmetic number, because the mean of its divisors is an integer number (6682368).

Almost surely, 2^40057971 is an apocalyptic number.

40057971 is a deficient number, since it is larger than the sum of its proper divisors (13400973).

40057971 is a wasteful number, since it uses less digits than its factorization.

40057971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 40057971 is about 6329.1366709844. The cubic root of 40057971 is about 342.1603246115.

The spelling of 40057971 in words is "forty million, fifty-seven thousand, nine hundred seventy-one".