427390776 has 32 divisors (see below), whose sum is σ = 1187197200. Its totient is φ = 142463520.

The previous prime is 427390763. The next prime is 427390783. The reversal of 427390776 is 677093724.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989115 + ... + 989546.

Almost surely, 2^427390776 is an apocalyptic number.

It is an amenable number.

427390776 is an abundant number, since it is smaller than the sum of its proper divisors (759806424).

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

427390776 is a wasteful number, since it uses less digits than its factorization.

427390776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978676 (or 1978666 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 427390776 is about 20673.4316454719. The cubic root of 427390776 is about 753.2544655124.

The spelling of 427390776 in words is "four hundred twenty-seven million, three hundred ninety thousand, seven hundred seventy-six".