47146947 has 8 divisors (see below), whose sum is σ = 63511056. Its totient is φ = 31107072.

The previous prime is 47146937. The next prime is 47147041. The reversal of 47146947 is 74964174.

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

It is not a de Polignac number, because 47146947 - 2⁷ = 47146819 is a prime.

It is a super-2 number, since 2×47146947² = 4445669222841618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47146899 and 47146908.

It is not an unprimeable number, because it can be changed into a prime (47146927) 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, 80718 + ... + 81299.

It is an arithmetic number, because the mean of its divisors is an integer number (7938882).

Almost surely, 2^47146947 is an apocalyptic number.

47146947 is a deficient number, since it is larger than the sum of its proper divisors (16364109).

47146947 is a wasteful number, since it uses less digits than its factorization.

47146947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162117.

The product of its digits is 169344, while the sum is 42.

The square root of 47146947 is about 6866.3634479978. The cubic root of 47146947 is about 361.2583203904.

Subtracting from 47146947 its sum of digits (42), we obtain a triangular number (47146905 = T₉₇₁₀).

The spelling of 47146947 in words is "forty-seven million, one hundred forty-six thousand, nine hundred forty-seven".