47890906 has 64 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 18398016.

The previous prime is 47890903. The next prime is 47890907. The reversal of 47890906 is 60909874.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (47890901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606175 + ... + 606253.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^47890906 is an apocalyptic number.

47890906 is a deficient number, since it is larger than the sum of its proper divisors (43347494).

47890906 is a wasteful number, since it uses less digits than its factorization.

47890906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 47890906 is about 6920.3255703760. The cubic root of 47890906 is about 363.1485806114.

The spelling of 47890906 in words is "forty-seven million, eight hundred ninety thousand, nine hundred six".