39479421 has 8 divisors (see below), whose sum is σ = 53231040. Its totient is φ = 26023712.

The previous prime is 39479417. The next prime is 39479441. The reversal of 39479421 is 12497493.

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

It is a cyclic number.

It is not a de Polignac number, because 39479421 - 2² = 39479417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39479421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39479441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73665 + ... + 74198.

It is an arithmetic number, because the mean of its divisors is an integer number (6653880).

Almost surely, 2^39479421 is an apocalyptic number.

It is an amenable number.

39479421 is a deficient number, since it is larger than the sum of its proper divisors (13751619).

39479421 is a wasteful number, since it uses less digits than its factorization.

39479421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147955.

The product of its digits is 54432, while the sum is 39.

The square root of 39479421 is about 6283.2651543604. The cubic root of 39479421 is about 340.5050768928.

The spelling of 39479421 in words is "thirty-nine million, four hundred seventy-nine thousand, four hundred twenty-one".