40723957 has 8 divisors (see below), whose sum is σ = 41313600. Its totient is φ = 40138560.

The previous prime is 40723951. The next prime is 40723979. The reversal of 40723957 is 75932704.

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

It is a cyclic number.

It is not a de Polignac number, because 40723957 - 2⁷ = 40723829 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 (40723951) 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, 21582 + ... + 23392.

It is an arithmetic number, because the mean of its divisors is an integer number (5164200).

Almost surely, 2^40723957 is an apocalyptic number.

It is an amenable number.

40723957 is a deficient number, since it is larger than the sum of its proper divisors (589643).

40723957 is a wasteful number, since it uses less digits than its factorization.

40723957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 40723957 is about 6381.5324961956. The cubic root of 40723957 is about 344.0461139055.

The spelling of 40723957 in words is "forty million, seven hundred twenty-three thousand, nine hundred fifty-seven".