154972369 has 2 divisors, whose sum is σ = 154972370. Its totient is φ = 154972368.

The previous prime is 154972361. The next prime is 154972397. The reversal of 154972369 is 963279451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150185025 + 4787344 = 12255^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 154972369 - 2³ = 154972361 is a prime.

It is a super-2 number, since 2×154972369² = 48032870306944322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154972361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77486184 + 77486185.

It is an arithmetic number, because the mean of its divisors is an integer number (77486185).

Almost surely, 2^154972369 is an apocalyptic number.

It is an amenable number.

154972369 is a deficient number, since it is larger than the sum of its proper divisors (1).

154972369 is an equidigital number, since it uses as much as digits as its factorization.

154972369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 154972369 is about 12448.7898608660. The cubic root of 154972369 is about 537.1366142346.

The spelling of 154972369 in words is "one hundred fifty-four million, nine hundred seventy-two thousand, three hundred sixty-nine".