442988746 has 16 divisors (see below), whose sum is σ = 688049640. Its totient is φ = 213653440.

The previous prime is 442988731. The next prime is 442988761. The reversal of 442988746 is 647889244.

It is an interprime number because it is at equal distance from previous prime (442988731) and next prime (442988761).

It can be written as a sum of positive squares in 4 ways, for example, as 297183121 + 145805625 = 17239^2 + 12075^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442988693 and 442988702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71076 + ... + 77056.

Almost surely, 2^442988746 is an apocalyptic number.

442988746 is a deficient number, since it is larger than the sum of its proper divisors (245060894).

442988746 is a wasteful number, since it uses less digits than its factorization.

442988746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289.

The product of its digits is 3096576, while the sum is 52.

The square root of 442988746 is about 21047.2978313132. The cubic root of 442988746 is about 762.3087376955.

The spelling of 442988746 in words is "four hundred forty-two million, nine hundred eighty-eight thousand, seven hundred forty-six".