47494139 has 32 divisors (see below), whose sum is σ = 62042112. Its totient is φ = 35280000.

The previous prime is 47494133. The next prime is 47494147. The reversal of 47494139 is 93149474.

It is not a de Polignac number, because 47494139 - 2⁴ = 47494123 is a prime.

It is a super-3 number, since 3×47494139³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47494096 and 47494105.

It is not an unprimeable number, because it can be changed into a prime (47494133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240989 + ... + 241185.

It is an arithmetic number, because the mean of its divisors is an integer number (1938816).

Almost surely, 2^47494139 is an apocalyptic number.

47494139 is a deficient number, since it is larger than the sum of its proper divisors (14547973).

47494139 is a wasteful number, since it uses less digits than its factorization.

47494139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its digits is 108864, while the sum is 41.

The square root of 47494139 is about 6891.5991612978. The cubic root of 47494139 is about 362.1429260717.

It can be divided in two parts, 4749 and 4139, that added together give a palindrome (8888).

The spelling of 47494139 in words is "forty-seven million, four hundred ninety-four thousand, one hundred thirty-nine".