774469609 has 4 divisors (see below), whose sum is σ = 775070800. Its totient is φ = 773868420.

The previous prime is 774469601. The next prime is 774469643. The reversal of 774469609 is 906964477.

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: 906964477 = 79 ⋅11480563.

It is a cyclic number.

It is not a de Polignac number, because 774469609 - 2³ = 774469601 is a prime.

It is a super-2 number, since 2×774469609² = 1199606350529225762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774469601) 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, 298659 + ... + 301240.

It is an arithmetic number, because the mean of its divisors is an integer number (193767700).

Almost surely, 2^774469609 is an apocalyptic number.

It is an amenable number.

774469609 is a deficient number, since it is larger than the sum of its proper divisors (601191).

774469609 is a wasteful number, since it uses less digits than its factorization.

774469609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601190.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 774469609 is about 27829.2940801595. The cubic root of 774469609 is about 918.3356838978.

The spelling of 774469609 in words is "seven hundred seventy-four million, four hundred sixty-nine thousand, six hundred nine".