15712969 has 2 divisors, whose sum is σ = 15712970. Its totient is φ = 15712968.

The previous prime is 15712927. The next prime is 15712987. The reversal of 15712969 is 96921751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12873744 + 2839225 = 3588^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 15712969 - 2¹¹ = 15710921 is a prime.

It is a super-3 number, since 3×15712969³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (15712999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7856484 + 7856485.

It is an arithmetic number, because the mean of its divisors is an integer number (7856485).

Almost surely, 2^15712969 is an apocalyptic number.

It is an amenable number.

15712969 is a deficient number, since it is larger than the sum of its proper divisors (1).

15712969 is an equidigital number, since it uses as much as digits as its factorization.

15712969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 40.

The square root of 15712969 is about 3963.9587535695. The cubic root of 15712969 is about 250.4682902692.

The spelling of 15712969 in words is "fifteen million, seven hundred twelve thousand, nine hundred sixty-nine".