37940649 has 4 divisors (see below), whose sum is σ = 50587536. Its totient is φ = 25293764.

The previous prime is 37940647. The next prime is 37940657. The reversal of 37940649 is 94604973.

37940649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 37940649 - 2¹ = 37940647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37940649.

It is not an unprimeable number, because it can be changed into a prime (37940647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6323439 + ... + 6323444.

It is an arithmetic number, because the mean of its divisors is an integer number (12646884).

Almost surely, 2^37940649 is an apocalyptic number.

It is an amenable number.

37940649 is a deficient number, since it is larger than the sum of its proper divisors (12646887).

37940649 is a wasteful number, since it uses less digits than its factorization.

37940649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12646886.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 37940649 is about 6159.5981200075. The cubic root of 37940649 is about 336.0224173677.

The spelling of 37940649 in words is "thirty-seven million, nine hundred forty thousand, six hundred forty-nine".