47117890 has 8 divisors (see below), whose sum is σ = 84812220. Its totient is φ = 18847152.

The previous prime is 47117887. The next prime is 47117911. The reversal of 47117890 is 9871174.

It can be written as a sum of positive squares in 2 ways, for example, as 46744569 + 373321 = 6837^2 + 611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355885 + ... + 2355904.

Almost surely, 2^47117890 is an apocalyptic number.

47117890 is a deficient number, since it is larger than the sum of its proper divisors (37694330).

47117890 is a wasteful number, since it uses less digits than its factorization.

47117890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711796.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 47117890 is about 6864.2472274824. The cubic root of 47117890 is about 361.1840897781.

The spelling of 47117890 in words is "forty-seven million, one hundred seventeen thousand, eight hundred ninety".