39130021 has 8 divisors (see below), whose sum is σ = 44766080. Its totient is φ = 33505488.

The previous prime is 39130001. The next prime is 39130051. The reversal of 39130021 is 12003193.

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 39130021 - 2²⁵ = 5575589 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 (39130001) 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, 6400 + ... + 10918.

It is an arithmetic number, because the mean of its divisors is an integer number (5595760).

Almost surely, 2^39130021 is an apocalyptic number.

It is an amenable number.

39130021 is a deficient number, since it is larger than the sum of its proper divisors (5636059).

39130021 is a wasteful number, since it uses less digits than its factorization.

39130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 39130021 is about 6255.3993477635. The cubic root of 39130021 is about 339.4975884114.

It can be divided in two parts, 3913002 and 1, that added together give a triangular number (3913003 = T₂₇₉₇).

The spelling of 39130021 in words is "thirty-nine million, one hundred thirty thousand, twenty-one".