154538979 has 8 divisors (see below), whose sum is σ = 235488000. Its totient is φ = 88307976.

The previous prime is 154538957. The next prime is 154539013. The reversal of 154538979 is 979835451.

154538979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 154538979 - 2⁷ = 154538851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154538939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3679479 + ... + 3679520.

It is an arithmetic number, because the mean of its divisors is an integer number (29436000).

Almost surely, 2^154538979 is an apocalyptic number.

154538979 is a deficient number, since it is larger than the sum of its proper divisors (80949021).

154538979 is an equidigital number, since it uses as much as digits as its factorization.

154538979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7359009.

The product of its digits is 1360800, while the sum is 51.

The square root of 154538979 is about 12431.3707611027. The cubic root of 154538979 is about 536.6354346154.

The spelling of 154538979 in words is "one hundred fifty-four million, five hundred thirty-eight thousand, nine hundred seventy-nine".