402947384 has 48 divisors (see below), whose sum is σ = 880650000. Its totient is φ = 172343808.

The previous prime is 402947359. The next prime is 402947399. The reversal of 402947384 is 483749204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321992 + ... + 323240.

It is an arithmetic number, because the mean of its divisors is an integer number (18346875).

Almost surely, 2^402947384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402947384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440325000).

402947384 is an abundant number, since it is smaller than the sum of its proper divisors (477702616).

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

402947384 is a wasteful number, since it uses less digits than its factorization.

402947384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 402947384 is about 20073.5493622827. The cubic root of 402947384 is about 738.6115821606.

The spelling of 402947384 in words is "four hundred two million, nine hundred forty-seven thousand, three hundred eighty-four".