40386737 has 2 divisors, whose sum is σ = 40386738. Its totient is φ = 40386736.

The previous prime is 40386701. The next prime is 40386743. The reversal of 40386737 is 73768304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39929761 + 456976 = 6319^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 40386737 - 2⁸ = 40386481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40386737.

It is not a weakly prime, because it can be changed into another prime (40386757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20193368 + 20193369.

It is an arithmetic number, because the mean of its divisors is an integer number (20193369).

Almost surely, 2^40386737 is an apocalyptic number.

It is an amenable number.

40386737 is a deficient number, since it is larger than the sum of its proper divisors (1).

40386737 is an equidigital number, since it uses as much as digits as its factorization.

40386737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 40386737 is about 6355.0560186359. The cubic root of 40386737 is about 343.0938411083.

The spelling of 40386737 in words is "forty million, three hundred eighty-six thousand, seven hundred thirty-seven".