545138979 has 32 divisors (see below), whose sum is σ = 909275136. Its totient is φ = 282229920.

The previous prime is 545138969. The next prime is 545138981. The reversal of 545138979 is 979831545.

It is not a de Polignac number, because 545138979 - 2⁴ = 545138963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545138969) 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 in 31 ways as a sum of consecutive naturals, for example, 67074 + ... + 74760.

It is an arithmetic number, because the mean of its divisors is an integer number (28414848).

Almost surely, 2^545138979 is an apocalyptic number.

545138979 is a deficient number, since it is larger than the sum of its proper divisors (364136157).

545138979 is a wasteful number, since it uses less digits than its factorization.

545138979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8015.

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

The square root of 545138979 is about 23348.2114732585. The cubic root of 545138979 is about 816.9003437556.

The spelling of 545138979 in words is "five hundred forty-five million, one hundred thirty-eight thousand, nine hundred seventy-nine".