13870951 has 2 divisors, whose sum is σ = 13870952. Its totient is φ = 13870950.

The previous prime is 13870939. The next prime is 13870979. The reversal of 13870951 is 15907831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15907831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13870951 - 2¹¹ = 13868903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13870921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935475 + 6935476.

It is an arithmetic number, because the mean of its divisors is an integer number (6935476).

Almost surely, 2^13870951 is an apocalyptic number.

13870951 is the 2356-th centered pentagonal number.

13870951 is a deficient number, since it is larger than the sum of its proper divisors (1).

13870951 is an equidigital number, since it uses as much as digits as its factorization.

13870951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13870951 is about 3724.3725646074. The cubic root of 13870951 is about 240.2714001517.

The spelling of 13870951 in words is "thirteen million, eight hundred seventy thousand, nine hundred fifty-one".