442234649 has 2 divisors, whose sum is σ = 442234650. Its totient is φ = 442234648.

The previous prime is 442234631. The next prime is 442234669. The reversal of 442234649 is 946432244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358420624 + 83814025 = 18932^2 + 9155^2 .

It is a cyclic number.

It is not a de Polignac number, because 442234649 - 2⁸ = 442234393 is a prime.

It is not a weakly prime, because it can be changed into another prime (442234669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221117324 + 221117325.

It is an arithmetic number, because the mean of its divisors is an integer number (221117325).

Almost surely, 2^442234649 is an apocalyptic number.

It is an amenable number.

442234649 is a deficient number, since it is larger than the sum of its proper divisors (1).

442234649 is an equidigital number, since it uses as much as digits as its factorization.

442234649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 38.

The square root of 442234649 is about 21029.3758585461. The cubic root of 442234649 is about 761.8759342013.

The spelling of 442234649 in words is "four hundred forty-two million, two hundred thirty-four thousand, six hundred forty-nine".