152969309 has 2 divisors, whose sum is σ = 152969310. Its totient is φ = 152969308.

The previous prime is 152969279. The next prime is 152969347. The reversal of 152969309 is 903969251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148766809 + 4202500 = 12197^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 152969309 - 2⁸ = 152969053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 152969309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152269309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76484654 + 76484655.

It is an arithmetic number, because the mean of its divisors is an integer number (76484655).

Almost surely, 2^152969309 is an apocalyptic number.

It is an amenable number.

152969309 is a deficient number, since it is larger than the sum of its proper divisors (1).

152969309 is an equidigital number, since it uses as much as digits as its factorization.

152969309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 152969309 is about 12368.0762044871. The cubic root of 152969309 is about 534.8123591534.

The spelling of 152969309 in words is "one hundred fifty-two million, nine hundred sixty-nine thousand, three hundred nine".