40390037 has 2 divisors, whose sum is σ = 40390038. Its totient is φ = 40390036.

The previous prime is 40390033. The next prime is 40390073. The reversal of 40390037 is 73009304.

Together with next prime (40390073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34562641 + 5827396 = 5879^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 40390037 - 2² = 40390033 is a prime.

It is a super-2 number, since 2×40390037² = 3262710177722738, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40389988 and 40390015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40390033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20195018 + 20195019.

It is an arithmetic number, because the mean of its divisors is an integer number (20195019).

Almost surely, 2^40390037 is an apocalyptic number.

It is an amenable number.

40390037 is a deficient number, since it is larger than the sum of its proper divisors (1).

40390037 is an equidigital number, since it uses as much as digits as its factorization.

40390037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 40390037 is about 6355.3156491240. The cubic root of 40390037 is about 343.1031855856.

The spelling of 40390037 in words is "forty million, three hundred ninety thousand, thirty-seven".