119745809 has 16 divisors (see below), whose sum is σ = 128174400. Its totient is φ = 111550464.

The previous prime is 119745781. The next prime is 119745827. The reversal of 119745809 is 908547911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-119745809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 119745809.

It is not an unprimeable number, because it can be changed into a prime (119742809) 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, 465809 + ... + 466065.

It is an arithmetic number, because the mean of its divisors is an integer number (8010900).

Almost surely, 2^119745809 is an apocalyptic number.

119745809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

119745809 is a deficient number, since it is larger than the sum of its proper divisors (8428591).

119745809 is a wasteful number, since it uses less digits than its factorization.

119745809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 119745809 is about 10942.8428207665. The cubic root of 119745809 is about 492.8938970480.

The spelling of 119745809 in words is "one hundred nineteen million, seven hundred forty-five thousand, eight hundred nine".