40898979 has 16 divisors (see below), whose sum is σ = 66099840. Its totient is φ = 24787080.

The previous prime is 40898969. The next prime is 40898981. The reversal of 40898979 is 97989804.

It is not a de Polignac number, because 40898979 - 2¹² = 40894883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40898929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68557 + ... + 69150.

It is an arithmetic number, because the mean of its divisors is an integer number (4131240).

Almost surely, 2^40898979 is an apocalyptic number.

40898979 is a deficient number, since it is larger than the sum of its proper divisors (25200861).

40898979 is a wasteful number, since it uses less digits than its factorization.

40898979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137727 (or 137721 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 40898979 is about 6395.2309575183. The cubic root of 40898979 is about 344.5382859547.

The spelling of 40898979 in words is "forty million, eight hundred ninety-eight thousand, nine hundred seventy-nine".