47909380 has 24 divisors (see below), whose sum is σ = 102029760. Its totient is φ = 18893280.

The previous prime is 47909377. The next prime is 47909399. The reversal of 47909380 is 8390974.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 15450 + ... + 18289.

It is an arithmetic number, because the mean of its divisors is an integer number (4251240).

Almost surely, 2^47909380 is an apocalyptic number.

It is an amenable number.

47909380 is an abundant number, since it is smaller than the sum of its proper divisors (54120380).

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

47909380 is a wasteful number, since it uses less digits than its factorization.

47909380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33819 (or 33817 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 47909380 is about 6921.6602054709. The cubic root of 47909380 is about 363.1952696732.

The spelling of 47909380 in words is "forty-seven million, nine hundred nine thousand, three hundred eighty".