39814947 has 12 divisors (see below), whose sum is σ = 58848504. Its totient is φ = 25925760.

The previous prime is 39814933. The next prime is 39814979. The reversal of 39814947 is 74941893.

It is not a de Polignac number, because 39814947 - 2¹⁹ = 39290659 is a prime.

It is a super-2 number, since 2×39814947² = 3170460009225618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39814927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51054 + ... + 51827.

It is an arithmetic number, because the mean of its divisors is an integer number (4904042).

Almost surely, 2^39814947 is an apocalyptic number.

39814947 is a deficient number, since it is larger than the sum of its proper divisors (19033557).

39814947 is a wasteful number, since it uses less digits than its factorization.

39814947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102930 (or 102927 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 39814947 is about 6309.9086364226. The cubic root of 39814947 is about 341.4669803090.

The spelling of 39814947 in words is "thirty-nine million, eight hundred fourteen thousand, nine hundred forty-seven".