47475831 has 8 divisors (see below), whose sum is σ = 68170480. Its totient is φ = 29215872.

The previous prime is 47475829. The next prime is 47475839. The reversal of 47475831 is 13857474.

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

It is not a de Polignac number, because 47475831 - 2¹ = 47475829 is a prime.

It is a super-2 number, since 2×47475831² = 4507909058281122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1217329 = 47475831 / (4 + 7 + 4 + 7 + 5 + 8 + 3 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47475831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47475839) 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, 608626 + ... + 608703.

It is an arithmetic number, because the mean of its divisors is an integer number (8521310).

Almost surely, 2^47475831 is an apocalyptic number.

47475831 is a deficient number, since it is larger than the sum of its proper divisors (20694649).

47475831 is a wasteful number, since it uses less digits than its factorization.

47475831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217345.

The product of its digits is 94080, while the sum is 39.

The square root of 47475831 is about 6890.2707493973. The cubic root of 47475831 is about 362.0963872430.

The spelling of 47475831 in words is "forty-seven million, four hundred seventy-five thousand, eight hundred thirty-one".