13858997 has 2 divisors, whose sum is σ = 13858998. Its totient is φ = 13858996.

The previous prime is 13858993. The next prime is 13859039. The reversal of 13858997 is 79985831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 2292196 = 3401^2 + 1514^2 .

It is a cyclic number.

It is not a de Polignac number, because 13858997 - 2² = 13858993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13858993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6929498 + 6929499.

It is an arithmetic number, because the mean of its divisors is an integer number (6929499).

Almost surely, 2^13858997 is an apocalyptic number.

It is an amenable number.

13858997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13858997 is an equidigital number, since it uses as much as digits as its factorization.

13858997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 50.

The square root of 13858997 is about 3722.7673846213. The cubic root of 13858997 is about 240.2023582669.

The spelling of 13858997 in words is "thirteen million, eight hundred fifty-eight thousand, nine hundred ninety-seven".