109199757 has 4 divisors (see below), whose sum is σ = 145599680. Its totient is φ = 72799836.

The previous prime is 109199723. The next prime is 109199759. The reversal of 109199757 is 757991901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 757991901 = 3 ⋅252663967.

It is not a de Polignac number, because 109199757 - 2¹¹ = 109197709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109199759) 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, 18199957 + ... + 18199962.

It is an arithmetic number, because the mean of its divisors is an integer number (36399920).

Almost surely, 2^109199757 is an apocalyptic number.

It is an amenable number.

109199757 is a deficient number, since it is larger than the sum of its proper divisors (36399923).

109199757 is an equidigital number, since it uses as much as digits as its factorization.

109199757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36399922.

The product of its (nonzero) digits is 178605, while the sum is 48.

The square root of 109199757 is about 10449.8687551567. The cubic root of 109199757 is about 477.9772475063.

The spelling of 109199757 in words is "one hundred nine million, one hundred ninety-nine thousand, seven hundred fifty-seven".