39130391 has 2 divisors, whose sum is σ = 39130392. Its totient is φ = 39130390.

The previous prime is 39130381. The next prime is 39130411. The reversal of 39130391 is 19303193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39130391 - 2¹⁰ = 39129367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39130381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19565195 + 19565196.

It is an arithmetic number, because the mean of its divisors is an integer number (19565196).

Almost surely, 2^39130391 is an apocalyptic number.

39130391 is a deficient number, since it is larger than the sum of its proper divisors (1).

39130391 is an equidigital number, since it uses as much as digits as its factorization.

39130391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 39130391 is about 6255.4289221443. The cubic root of 39130391 is about 339.4986584654.

The spelling of 39130391 in words is "thirty-nine million, one hundred thirty thousand, three hundred ninety-one".