107729491 has 4 divisors (see below), whose sum is σ = 110234872. Its totient is φ = 105224112.

The previous prime is 107729473. The next prime is 107729513. The reversal of 107729491 is 194927701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194927701 = 1009 ⋅193189.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107729491 is a prime.

It is a super-2 number, since 2×107729491² = 23211286462238162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107729431) 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, 1252626 + ... + 1252711.

It is an arithmetic number, because the mean of its divisors is an integer number (27558718).

Almost surely, 2^107729491 is an apocalyptic number.

107729491 is a deficient number, since it is larger than the sum of its proper divisors (2505381).

107729491 is an equidigital number, since it uses as much as digits as its factorization.

107729491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505380.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 107729491 is about 10379.2818152317. The cubic root of 107729491 is about 475.8223847719.

The spelling of 107729491 in words is "one hundred seven million, seven hundred twenty-nine thousand, four hundred ninety-one".