109979478 has 64 divisors (see below), whose sum is σ = 281571840. Its totient is φ = 31168800.

The previous prime is 109979459. The next prime is 109979501. The reversal of 109979478 is 874979901.

109979478 is a `hidden beast` number, since 10 + 99 + 79 + 478 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48408 + ... + 50628.

It is an arithmetic number, because the mean of its divisors is an integer number (4399560).

Almost surely, 2^109979478 is an apocalyptic number.

109979478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109979478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140785920).

109979478 is an abundant number, since it is smaller than the sum of its proper divisors (171592362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109979478 is a wasteful number, since it uses less digits than its factorization.

109979478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 109979478 is about 10487.1100881034. The cubic root of 109979478 is about 479.1121870294.

The spelling of 109979478 in words is "one hundred nine million, nine hundred seventy-nine thousand, four hundred seventy-eight".