109906919 has 4 divisors (see below), whose sum is σ = 109932480. Its totient is φ = 109881360.

The previous prime is 109906879. The next prime is 109906969. The reversal of 109906919 is 919609901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109906919 - 2⁸ = 109906663 is a prime.

It is a super-2 number, since 2×109906919² = 24159061688145122, which contains 22 as substring.

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 109906919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109906969) 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, 4574 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (27483120).

Almost surely, 2^109906919 is an apocalyptic number.

109906919 is a deficient number, since it is larger than the sum of its proper divisors (25561).

109906919 is an equidigital number, since it uses as much as digits as its factorization.

109906919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560.

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 109906919 is about 10483.6500800055. The cubic root of 109906919 is about 479.0067990370.

The spelling of 109906919 in words is "one hundred nine million, nine hundred six thousand, nine hundred nineteen".