109639154 has 16 divisors (see below), whose sum is σ = 175679928. Its totient is φ = 51136512.

The previous prime is 109639141. The next prime is 109639193. The reversal of 109639154 is 451936901.

It can be written as a sum of positive squares in 4 ways, for example, as 55100929 + 54538225 = 7423^2 + 7385^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10427 + ... + 18110.

Almost surely, 2^109639154 is an apocalyptic number.

109639154 is a deficient number, since it is larger than the sum of its proper divisors (66040774).

109639154 is a wasteful number, since it uses less digits than its factorization.

109639154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28669.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 109639154 is about 10470.8716924619. The cubic root of 109639154 is about 478.6174830643.

The spelling of 109639154 in words is "one hundred nine million, six hundred thirty-nine thousand, one hundred fifty-four".