154032889 has 2 divisors, whose sum is σ = 154032890. Its totient is φ = 154032888.

The previous prime is 154032841. The next prime is 154032911. The reversal of 154032889 is 988230451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96196864 + 57836025 = 9808^2 + 7605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154032889 is a prime.

It is a super-2 number, since 2×154032889² = 47452261787372642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154032589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77016444 + 77016445.

It is an arithmetic number, because the mean of its divisors is an integer number (77016445).

Almost surely, 2^154032889 is an apocalyptic number.

It is an amenable number.

154032889 is a deficient number, since it is larger than the sum of its proper divisors (1).

154032889 is an equidigital number, since it uses as much as digits as its factorization.

154032889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 154032889 is about 12410.9987108210. The cubic root of 154032889 is about 536.0489960873.

The spelling of 154032889 in words is "one hundred fifty-four million, thirty-two thousand, eight hundred eighty-nine".