402449424 has 40 divisors (see below), whose sum is σ = 1119636672. Its totient is φ = 123830400.

The previous prime is 402449417. The next prime is 402449491. The reversal of 402449424 is 424944204.

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, 321852 + ... + 323099.

Almost surely, 2^402449424 is an apocalyptic number.

It is an amenable number.

402449424 is an abundant number, since it is smaller than the sum of its proper divisors (717187248).

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

402449424 is a wasteful number, since it uses less digits than its factorization.

402449424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644975 (or 644969 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 402449424 is about 20061.1421409650. The cubic root of 402449424 is about 738.3071994627.

It can be divided in two parts, 402 and 449424, that added together give a triangular number (449826 = T₉₄₈).

The spelling of 402449424 in words is "four hundred two million, four hundred forty-nine thousand, four hundred twenty-four".