39380391 has 8 divisors (see below), whose sum is σ = 58341360. Its totient is φ = 26253576.

The previous prime is 39380371. The next prime is 39380399. The reversal of 39380391 is 19308393.

It is not a de Polignac number, because 39380391 - 2⁵ = 39380359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39380399) 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, 729240 + ... + 729293.

It is an arithmetic number, because the mean of its divisors is an integer number (7292670).

Almost surely, 2^39380391 is an apocalyptic number.

39380391 is a deficient number, since it is larger than the sum of its proper divisors (18960969).

39380391 is a wasteful number, since it uses less digits than its factorization.

39380391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458542 (or 1458536 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 39380391 is about 6275.3797494654. The cubic root of 39380391 is about 340.2201313793.

The spelling of 39380391 in words is "thirty-nine million, three hundred eighty thousand, three hundred ninety-one".