40671957 has 4 divisors (see below), whose sum is σ = 54229280. Its totient is φ = 27114636.

The previous prime is 40671947. The next prime is 40671979. The reversal of 40671957 is 75917604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40671957 - 2⁴ = 40671941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40671947) 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, 6778657 + ... + 6778662.

It is an arithmetic number, because the mean of its divisors is an integer number (13557320).

Almost surely, 2^40671957 is an apocalyptic number.

It is an amenable number.

40671957 is a deficient number, since it is larger than the sum of its proper divisors (13557323).

40671957 is a wasteful number, since it uses less digits than its factorization.

40671957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557322.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 40671957 is about 6377.4569383101. The cubic root of 40671957 is about 343.8996152240.

The spelling of 40671957 in words is "forty million, six hundred seventy-one thousand, nine hundred fifty-seven".