190969091 has 4 divisors (see below), whose sum is σ = 191024784. Its totient is φ = 190913400.

The previous prime is 190969073. The next prime is 190969111.

It is a happy number.

190969091 is nontrivially palindromic in base 10.

190969091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 190969091 - 2²² = 186774787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190969001) 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, 22340 + ... + 29681.

It is an arithmetic number, because the mean of its divisors is an integer number (47756196).

Almost surely, 2^190969091 is an apocalyptic number.

190969091 is a deficient number, since it is larger than the sum of its proper divisors (55693).

190969091 is an equidigital number, since it uses as much as digits as its factorization.

190969091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55692.

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

The square root of 190969091 is about 13819.1566674671. The cubic root of 190969091 is about 575.8654551280.

The spelling of 190969091 in words is "one hundred ninety million, nine hundred sixty-nine thousand, ninety-one".