13953997 has 2 divisors, whose sum is σ = 13953998. Its totient is φ = 13953996.

The previous prime is 13953931. The next prime is 13954021. The reversal of 13953997 is 79935931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7733961 + 6220036 = 2781^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 13953997 - 2⁷ = 13953869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13953197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6976998 + 6976999.

It is an arithmetic number, because the mean of its divisors is an integer number (6976999).

Almost surely, 2^13953997 is an apocalyptic number.

It is an amenable number.

13953997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13953997 is an equidigital number, since it uses as much as digits as its factorization.

13953997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 46.

The square root of 13953997 is about 3735.5049190170. The cubic root of 13953997 is about 240.7499515655.

The spelling of 13953997 in words is "thirteen million, nine hundred fifty-three thousand, nine hundred ninety-seven".