424643994 has 12 divisors (see below), whose sum is σ = 920062026. Its totient is φ = 141547992.

The previous prime is 424643957. The next prime is 424644001. The reversal of 424643994 is 499346424.

It can be written as a sum of positive squares in only one way, i.e., 360050625 + 64593369 = 18975^2 + 8037^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11795649 + ... + 11795684.

Almost surely, 2^424643994 is an apocalyptic number.

424643994 is an abundant number, since it is smaller than the sum of its proper divisors (495418032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424643994 is a wasteful number, since it uses less digits than its factorization.

424643994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23591341 (or 23591338 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 424643994 is about 20606.8919053796. The cubic root of 424643994 is about 751.6373083607.

The spelling of 424643994 in words is "four hundred twenty-four million, six hundred forty-three thousand, nine hundred ninety-four".