109989477 has 24 divisors (see below), whose sum is σ = 172774784. Its totient is φ = 67021344.

The previous prime is 109989463. The next prime is 109989479. The reversal of 109989477 is 774989901.

109989477 is a `hidden beast` number, since 1 + 0 + 99 + 89 + 477 = 666.

It is not a de Polignac number, because 109989477 - 2⁶ = 109989413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109989479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7488 + ... + 16614.

Almost surely, 2^109989477 is an apocalyptic number.

It is an amenable number.

109989477 is a deficient number, since it is larger than the sum of its proper divisors (62785307).

109989477 is a wasteful number, since it uses less digits than its factorization.

109989477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9246 counting only the distinct ones).

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

The square root of 109989477 is about 10487.5868053619. The cubic root of 109989477 is about 479.1267063975.

The spelling of 109989477 in words is "one hundred nine million, nine hundred eighty-nine thousand, four hundred seventy-seven".