37649039 has 2 divisors, whose sum is σ = 37649040. Its totient is φ = 37649038.

The previous prime is 37649011. The next prime is 37649077. The reversal of 37649039 is 93094673.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37649039 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 37648987 and 37649005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37649939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18824519 + 18824520.

It is an arithmetic number, because the mean of its divisors is an integer number (18824520).

Almost surely, 2^37649039 is an apocalyptic number.

37649039 is a deficient number, since it is larger than the sum of its proper divisors (1).

37649039 is an equidigital number, since it uses as much as digits as its factorization.

37649039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 37649039 is about 6135.8812732973. The cubic root of 37649039 is about 335.1593182943.

The spelling of 37649039 in words is "thirty-seven million, six hundred forty-nine thousand, thirty-nine".