154311979 has 2 divisors, whose sum is σ = 154311980. Its totient is φ = 154311978.

The previous prime is 154311973. The next prime is 154312013. The reversal of 154311979 is 979113451.

154311979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154311979 - 2⁵ = 154311947 is a prime.

It is not a weakly prime, because it can be changed into another prime (154311973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77155989 + 77155990.

It is an arithmetic number, because the mean of its divisors is an integer number (77155990).

Almost surely, 2^154311979 is an apocalyptic number.

154311979 is a deficient number, since it is larger than the sum of its proper divisors (1).

154311979 is an equidigital number, since it uses as much as digits as its factorization.

154311979 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 154311979 is about 12422.2372783650. The cubic root of 154311979 is about 536.3725539323.

The spelling of 154311979 in words is "one hundred fifty-four million, three hundred eleven thousand, nine hundred seventy-nine".