154299979 has 2 divisors, whose sum is σ = 154299980. Its totient is φ = 154299978.

The previous prime is 154299941. The next prime is 154300019. The reversal of 154299979 is 979992451.

154299979 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 a de Polignac number, because none of the positive numbers 2^k-154299979 is a prime.

It is not a weakly prime, because it can be changed into another prime (154290979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77149989 + 77149990.

It is an arithmetic number, because the mean of its divisors is an integer number (77149990).

Almost surely, 2^154299979 is an apocalyptic number.

154299979 is a deficient number, since it is larger than the sum of its proper divisors (1).

154299979 is an equidigital number, since it uses as much as digits as its factorization.

154299979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 55.

The square root of 154299979 is about 12421.7542641931. The cubic root of 154299979 is about 536.3586499837.

The spelling of 154299979 in words is "one hundred fifty-four million, two hundred ninety-nine thousand, nine hundred seventy-nine".