37990999 has 4 divisors (see below), whose sum is σ = 38148880. Its totient is φ = 37833120.

The previous prime is 37990991. The next prime is 37991003. The reversal of 37990999 is 99909973.

37990999 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.

It is a cyclic number.

It is not a de Polignac number, because 37990999 - 2³ = 37990991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37990991) 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, 78579 + ... + 79060.

It is an arithmetic number, because the mean of its divisors is an integer number (9537220).

Almost surely, 2^37990999 is an apocalyptic number.

37990999 is a deficient number, since it is larger than the sum of its proper divisors (157881).

37990999 is a wasteful number, since it uses less digits than its factorization.

37990999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157880.

The product of its (nonzero) digits is 1240029, while the sum is 55.

The square root of 37990999 is about 6163.6838822250. The cubic root of 37990999 is about 336.1709937235.

It can be divided in two parts, 379 and 90999, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 37990999 in words is "thirty-seven million, nine hundred ninety thousand, nine hundred ninety-nine".