39212493 has 16 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 24919664.

The previous prime is 39212449. The next prime is 39212501. The reversal of 39212493 is 39421293.

It is a cyclic number.

It is not a de Polignac number, because 39212493 - 2⁸ = 39212237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39212413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23980 + ... + 25562.

It is an arithmetic number, because the mean of its divisors is an integer number (3421440).

Almost surely, 2^39212493 is an apocalyptic number.

It is an amenable number.

39212493 is a deficient number, since it is larger than the sum of its proper divisors (15530547).

39212493 is a wasteful number, since it uses less digits than its factorization.

39212493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its digits is 11664, while the sum is 33.

The square root of 39212493 is about 6261.9879431375. The cubic root of 39212493 is about 339.7359339473.

The spelling of 39212493 in words is "thirty-nine million, two hundred twelve thousand, four hundred ninety-three".