109139740 has 24 divisors (see below), whose sum is σ = 230076000. Its totient is φ = 43487808.

The previous prime is 109139729. The next prime is 109139741. The reversal of 109139740 is 47931901.

It is a super-2 number, since 2×109139740² = 23822965694535200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109139696 and 109139705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109139741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5115 + ... + 15634.

It is an arithmetic number, because the mean of its divisors is an integer number (9586500).

Almost surely, 2^109139740 is an apocalyptic number.

109139740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109139740 is an abundant number, since it is smaller than the sum of its proper divisors (120936260).

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

109139740 is a wasteful number, since it uses less digits than its factorization.

109139740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21021 (or 21019 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 109139740 is about 10446.9966976160. The cubic root of 109139740 is about 477.8896648402.

The spelling of 109139740 in words is "one hundred nine million, one hundred thirty-nine thousand, seven hundred forty".