37999985 has 8 divisors (see below), whose sum is σ = 45660456. Its totient is φ = 30359680.

The previous prime is 37999957. The next prime is 37999987. The reversal of 37999985 is 58999973.

37999985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 152881 + 37847104 = 391^2 + 6152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 37999985 - 2⁸ = 37999729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37999987) 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 7 ways as a sum of consecutive naturals, for example, 524 + ... + 8733.

It is an arithmetic number, because the mean of its divisors is an integer number (5707557).

Almost surely, 2^37999985 is an apocalyptic number.

It is an amenable number.

37999985 is a deficient number, since it is larger than the sum of its proper divisors (7660471).

37999985 is an equidigital number, since it uses as much as digits as its factorization.

37999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10083.

The product of its digits is 5511240, while the sum is 59.

The square root of 37999985 is about 6164.4127863082. The cubic root of 37999985 is about 336.1974964434.

The spelling of 37999985 in words is "thirty-seven million, nine hundred ninety-nine thousand, nine hundred eighty-five".