442164677 has 2 divisors, whose sum is σ = 442164678. Its totient is φ = 442164676.

The previous prime is 442164631. The next prime is 442164757. The reversal of 442164677 is 776461244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308669761 + 133494916 = 17569^2 + 11554^2 .

It is a cyclic number.

It is not a de Polignac number, because 442164677 - 2²⁰ = 441116101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442161677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221082338 + 221082339.

It is an arithmetic number, because the mean of its divisors is an integer number (221082339).

Almost surely, 2^442164677 is an apocalyptic number.

It is an amenable number.

442164677 is a deficient number, since it is larger than the sum of its proper divisors (1).

442164677 is an equidigital number, since it uses as much as digits as its factorization.

442164677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 41.

The square root of 442164677 is about 21027.7121199621. The cubic root of 442164677 is about 761.8357498068.

The spelling of 442164677 in words is "four hundred forty-two million, one hundred sixty-four thousand, six hundred seventy-seven".