40023757 has 2 divisors, whose sum is σ = 40023758. Its totient is φ = 40023756.

The previous prime is 40023733. The next prime is 40023769. The reversal of 40023757 is 75732004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32592681 + 7431076 = 5709^2 + 2726^2 .

It is a cyclic number.

It is not a de Polignac number, because 40023757 - 2⁷ = 40023629 is a prime.

It is a super-2 number, since 2×40023757² = 3203802248790098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40023787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011878 + 20011879.

It is an arithmetic number, because the mean of its divisors is an integer number (20011879).

Almost surely, 2^40023757 is an apocalyptic number.

It is an amenable number.

40023757 is a deficient number, since it is larger than the sum of its proper divisors (1).

40023757 is an equidigital number, since it uses as much as digits as its factorization.

40023757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 40023757 is about 6326.4331973079. The cubic root of 40023757 is about 342.0628824332.

The spelling of 40023757 in words is "forty million, twenty-three thousand, seven hundred fifty-seven".