109087969 has 2 divisors, whose sum is σ = 109087970. Its totient is φ = 109087968.

The previous prime is 109087961. The next prime is 109087973. The reversal of 109087969 is 969780901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94342369 + 14745600 = 9713^2 + 3840^2 .

It is a cyclic number.

It is not a de Polignac number, because 109087969 - 2³ = 109087961 is a prime.

It is a super-2 number, since 2×109087969² = 23800369961089922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109087961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54543984 + 54543985.

It is an arithmetic number, because the mean of its divisors is an integer number (54543985).

Almost surely, 2^109087969 is an apocalyptic number.

It is an amenable number.

109087969 is a deficient number, since it is larger than the sum of its proper divisors (1).

109087969 is an equidigital number, since it uses as much as digits as its factorization.

109087969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 109087969 is about 10444.5186102568. The cubic root of 109087969 is about 477.8140897446.

The spelling of 109087969 in words is "one hundred nine million, eighty-seven thousand, nine hundred sixty-nine".