39471879 has 4 divisors (see below), whose sum is σ = 52629176. Its totient is φ = 26314584.

The previous prime is 39471857. The next prime is 39471881. The reversal of 39471879 is 97817493.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 39471879 - 2¹² = 39467783 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 (39471899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578644 + ... + 6578649.

It is an arithmetic number, because the mean of its divisors is an integer number (13157294).

Almost surely, 2^39471879 is an apocalyptic number.

39471879 is a deficient number, since it is larger than the sum of its proper divisors (13157297).

39471879 is a wasteful number, since it uses less digits than its factorization.

39471879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13157296.

The product of its digits is 381024, while the sum is 48.

The square root of 39471879 is about 6282.6649600309. The cubic root of 39471879 is about 340.4833925758.

The spelling of 39471879 in words is "thirty-nine million, four hundred seventy-one thousand, eight hundred seventy-nine".