474891689 has 2 divisors, whose sum is σ = 474891690. Its totient is φ = 474891688.

The previous prime is 474891679. The next prime is 474891701. The reversal of 474891689 is 986198474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429194089 + 45697600 = 20717^2 + 6760^2 .

It is a cyclic number.

It is not a de Polignac number, because 474891689 - 2¹² = 474887593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (474891679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237445844 + 237445845.

It is an arithmetic number, because the mean of its divisors is an integer number (237445845).

Almost surely, 2^474891689 is an apocalyptic number.

It is an amenable number.

474891689 is a deficient number, since it is larger than the sum of its proper divisors (1).

474891689 is an equidigital number, since it uses as much as digits as its factorization.

474891689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The square root of 474891689 is about 21792.0097512827. The cubic root of 474891689 is about 780.1860661743.

The spelling of 474891689 in words is "four hundred seventy-four million, eight hundred ninety-one thousand, six hundred eighty-nine".