37139947 has 6 divisors (see below), whose sum is σ = 40216812. Its totient is φ = 34282872.

The previous prime is 37139929. The next prime is 37139959. The reversal of 37139947 is 74993173.

It is not a de Polignac number, because 37139947 - 2¹⁵ = 37107179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37139987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109713 + ... + 110050.

It is an arithmetic number, because the mean of its divisors is an integer number (6702802).

Almost surely, 2^37139947 is an apocalyptic number.

37139947 is a deficient number, since it is larger than the sum of its proper divisors (3076865).

37139947 is a wasteful number, since it uses less digits than its factorization.

37139947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219789 (or 219776 counting only the distinct ones).

The product of its digits is 142884, while the sum is 43.

The square root of 37139947 is about 6094.2552457212. The cubic root of 37139947 is about 333.6417777204.

The spelling of 37139947 in words is "thirty-seven million, one hundred thirty-nine thousand, nine hundred forty-seven".