47409340 has 24 divisors (see below), whose sum is σ = 108610992. Its totient is φ = 17239680.

The previous prime is 47409301. The next prime is 47409347. The reversal of 47409340 is 4390474.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47409347) 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, 107529 + ... + 107968.

It is an arithmetic number, because the mean of its divisors is an integer number (4525458).

Almost surely, 2^47409340 is an apocalyptic number.

It is an amenable number.

47409340 is an abundant number, since it is smaller than the sum of its proper divisors (61201652).

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

47409340 is a wasteful number, since it uses less digits than its factorization.

47409340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215517 (or 215515 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 47409340 is about 6885.4440670156. Note that the first 3 decimals coincide. The cubic root of 47409340 is about 361.9272668094.

The spelling of 47409340 in words is "forty-seven million, four hundred nine thousand, three hundred forty".