13972969 has 2 divisors, whose sum is σ = 13972970. Its totient is φ = 13972968.

The previous prime is 13972951. The next prime is 13973017. The reversal of 13972969 is 96927931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13875625 + 97344 = 3725^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 13972969 - 2²³ = 5584361 is a prime.

It is a super-2 number, since 2×13972969² = 390487725349922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13972949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6986484 + 6986485.

It is an arithmetic number, because the mean of its divisors is an integer number (6986485).

Almost surely, 2^13972969 is an apocalyptic number.

It is an amenable number.

13972969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13972969 is an equidigital number, since it uses as much as digits as its factorization.

13972969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 13972969 is about 3738.0434721924. The cubic root of 13972969 is about 240.8590108702.

It can be divided in two parts, 13972 and 969, that added together give a palindrome (14941).

The spelling of 13972969 in words is "thirteen million, nine hundred seventy-two thousand, nine hundred sixty-nine".