47890929 has 4 divisors (see below), whose sum is σ = 63854576. Its totient is φ = 31927284.

The previous prime is 47890907. The next prime is 47890951. The reversal of 47890929 is 92909874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (47890907) and next prime (47890951).

It is not a de Polignac number, because 47890929 - 2¹² = 47886833 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47890229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7981819 + ... + 7981824.

It is an arithmetic number, because the mean of its divisors is an integer number (15963644).

Almost surely, 2^47890929 is an apocalyptic number.

It is an amenable number.

47890929 is a deficient number, since it is larger than the sum of its proper divisors (15963647).

47890929 is a wasteful number, since it uses less digits than its factorization.

47890929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15963646.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 47890929 is about 6920.3272321473. The cubic root of 47890929 is about 363.1486387464.

The spelling of 47890929 in words is "forty-seven million, eight hundred ninety thousand, nine hundred twenty-nine".