190840669 has 4 divisors (see below), whose sum is σ = 192297600. Its totient is φ = 189383740.

The previous prime is 190840667. The next prime is 190840697. The reversal of 190840669 is 966048091.

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.

It is a cyclic number.

It is not a de Polignac number, because 190840669 - 2¹ = 190840667 is a prime.

It is a super-2 number, since 2×190840669² = 72840321888735122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190840667) 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, 728269 + ... + 728530.

It is an arithmetic number, because the mean of its divisors is an integer number (48074400).

Almost surely, 2^190840669 is an apocalyptic number.

It is an amenable number.

190840669 is a deficient number, since it is larger than the sum of its proper divisors (1456931).

190840669 is a wasteful number, since it uses less digits than its factorization.

190840669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456930.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 190840669 is about 13814.5093651566. The cubic root of 190840669 is about 575.7363410802.

The spelling of 190840669 in words is "one hundred ninety million, eight hundred forty thousand, six hundred sixty-nine".