47807940 has 24 divisors (see below), whose sum is σ = 133862400. Its totient is φ = 12748768.

The previous prime is 47807939. The next prime is 47807941. The reversal of 47807940 is 4970874.

It is an interprime number because it is at equal distance from previous prime (47807939) and next prime (47807941).

It is not an unprimeable number, because it can be changed into a prime (47807941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398340 + ... + 398459.

It is an arithmetic number, because the mean of its divisors is an integer number (5577600).

Almost surely, 2^47807940 is an apocalyptic number.

It is an amenable number.

47807940 is an abundant number, since it is smaller than the sum of its proper divisors (86054460).

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

47807940 is a wasteful number, since it uses less digits than its factorization.

47807940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796811 (or 796809 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 47807940 is about 6914.3286008115. The cubic root of 47807940 is about 362.9387537162.

It can be divided in two parts, 4780 and 7940, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 47807940 in words is "forty-seven million, eight hundred seven thousand, nine hundred forty".