109421772 has 12 divisors (see below), whose sum is σ = 255317496. Its totient is φ = 36473920.

The previous prime is 109421759. The next prime is 109421777. The reversal of 109421772 is 277124901.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (109421777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4559229 + ... + 4559252.

It is an arithmetic number, because the mean of its divisors is an integer number (21276458).

Almost surely, 2^109421772 is an apocalyptic number.

109421772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

109421772 is an abundant number, since it is smaller than the sum of its proper divisors (145895724).

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

109421772 is a wasteful number, since it uses less digits than its factorization.

109421772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118488 (or 9118486 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 109421772 is about 10460.4862219688. The cubic root of 109421772 is about 478.3009548297.

The spelling of 109421772 in words is "one hundred nine million, four hundred twenty-one thousand, seven hundred seventy-two".