674092409 has 2 divisors, whose sum is σ = 674092410. Its totient is φ = 674092408.

The previous prime is 674092387. The next prime is 674092411. The reversal of 674092409 is 904290476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438776809 + 235315600 = 20947^2 + 15340^2 .

It is a cyclic number.

It is not a de Polignac number, because 674092409 - 2²⁴ = 657315193 is a prime.

Together with 674092411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (674092459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337046204 + 337046205.

It is an arithmetic number, because the mean of its divisors is an integer number (337046205).

Almost surely, 2^674092409 is an apocalyptic number.

It is an amenable number.

674092409 is a deficient number, since it is larger than the sum of its proper divisors (1).

674092409 is an equidigital number, since it uses as much as digits as its factorization.

674092409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 674092409 is about 25963.2896413378. The cubic root of 674092409 is about 876.8119877613.

The spelling of 674092409 in words is "six hundred seventy-four million, ninety-two thousand, four hundred nine".