47917893 has 4 divisors (see below), whose sum is σ = 63890528. Its totient is φ = 31945260.

The previous prime is 47917871. The next prime is 47917921. The reversal of 47917893 is 39871974.

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 not a de Polignac number, because 47917893 - 2⁵ = 47917861 is a prime.

It is a super-2 number, since 2×47917893² = 4592248939118898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47915893) 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, 7986313 + ... + 7986318.

It is an arithmetic number, because the mean of its divisors is an integer number (15972632).

Almost surely, 2^47917893 is an apocalyptic number.

It is an amenable number.

47917893 is a deficient number, since it is larger than the sum of its proper divisors (15972635).

47917893 is a wasteful number, since it uses less digits than its factorization.

47917893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15972634.

The product of its digits is 381024, while the sum is 48.

The square root of 47917893 is about 6922.2751317757. The cubic root of 47917893 is about 363.2167804102.

The spelling of 47917893 in words is "forty-seven million, nine hundred seventeen thousand, eight hundred ninety-three".