40057837 has 2 divisors, whose sum is σ = 40057838. Its totient is φ = 40057836.

The previous prime is 40057781. The next prime is 40057847. The reversal of 40057837 is 73875004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24542116 + 15515721 = 4954^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 40057837 - 2¹¹ = 40055789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40057847) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028918 + 20028919.

It is an arithmetic number, because the mean of its divisors is an integer number (20028919).

Almost surely, 2^40057837 is an apocalyptic number.

It is an amenable number.

40057837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40057837 is an equidigital number, since it uses as much as digits as its factorization.

40057837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 40057837 is about 6329.1260850136. The cubic root of 40057837 is about 342.1599430850.

The spelling of 40057837 in words is "forty million, fifty-seven thousand, eight hundred thirty-seven".