13139390 has 24 divisors (see below), whose sum is σ = 25998840. Its totient is φ = 4777520.

The previous prime is 13139387. The next prime is 13139411. The reversal of 13139390 is 9393131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4220 + ... + 6639.

It is an arithmetic number, because the mean of its divisors is an integer number (1083285).

Almost surely, 2^13139390 is an apocalyptic number.

13139390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13139390 is a deficient number, since it is larger than the sum of its proper divisors (12859450).

13139390 is a wasteful number, since it uses less digits than its factorization.

13139390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10888 (or 10877 counting only the distinct ones).

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

The square root of 13139390 is about 3624.8296511698. The cubic root of 13139390 is about 235.9708740269.

The spelling of 13139390 in words is "thirteen million, one hundred thirty-nine thousand, three hundred ninety".