109939788 has 48 divisors (see below), whose sum is σ = 325749760. Its totient is φ = 31411152.

The previous prime is 109939771. The next prime is 109939789. The reversal of 109939788 is 887939901.

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

It is not an unprimeable number, because it can be changed into a prime (109939789) 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, 71956 + ... + 73467.

Almost surely, 2^109939788 is an apocalyptic number.

109939788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109939788 is an abundant number, since it is smaller than the sum of its proper divisors (215809972).

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

109939788 is a wasteful number, since it uses less digits than its factorization.

109939788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145443 (or 145435 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 109939788 is about 10485.2175943087. The cubic root of 109939788 is about 479.0545452128.

The spelling of 109939788 in words is "one hundred nine million, nine hundred thirty-nine thousand, seven hundred eighty-eight".