47399240 has 32 divisors (see below), whose sum is σ = 121884480. Its totient is φ = 16251072.

The previous prime is 47399227. The next prime is 47399249. The reversal of 47399240 is 4299374.

It is a junction number, because it is equal to n+sod(n) for n = 47399194 and 47399203.

It is not an unprimeable number, because it can be changed into a prime (47399249) 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, 84362 + ... + 84921.

It is an arithmetic number, because the mean of its divisors is an integer number (3808890).

Almost surely, 2^47399240 is an apocalyptic number.

47399240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47399240 is an abundant number, since it is smaller than the sum of its proper divisors (74485240).

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

47399240 is a wasteful number, since it uses less digits than its factorization.

47399240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169301 (or 169297 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 47399240 is about 6884.7105966772. The cubic root of 47399240 is about 361.9015635407.

The spelling of 47399240 in words is "forty-seven million, three hundred ninety-nine thousand, two hundred forty".