39428613 has 20 divisors (see below), whose sum is σ = 67314720. Its totient is φ = 22530312.

The previous prime is 39428581. The next prime is 39428633. The reversal of 39428613 is 31682493.

39428613 is a `hidden beast` number, since 39 + 4 + 2 + 8 + 613 = 666.

It is not a de Polignac number, because 39428613 - 2⁵ = 39428581 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428633) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34203 + ... + 35336.

It is an arithmetic number, because the mean of its divisors is an integer number (3365736).

Almost surely, 2^39428613 is an apocalyptic number.

It is an amenable number.

39428613 is a deficient number, since it is larger than the sum of its proper divisors (27886107).

39428613 is an equidigital number, since it uses as much as digits as its factorization.

39428613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69558 (or 69549 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 39428613 is about 6279.2207319061. The cubic root of 39428613 is about 340.3589433006.

The spelling of 39428613 in words is "thirty-nine million, four hundred twenty-eight thousand, six hundred thirteen".