47235139 has 4 divisors (see below), whose sum is σ = 53983024. Its totient is φ = 40487256.

The previous prime is 47235131. The next prime is 47235173. The reversal of 47235139 is 93153274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47235139 - 2³ = 47235131 is a prime.

It is a super-4 number, since 4×47235139⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47235131) 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, 3373932 + ... + 3373945.

It is an arithmetic number, because the mean of its divisors is an integer number (13495756).

Almost surely, 2^47235139 is an apocalyptic number.

47235139 is a deficient number, since it is larger than the sum of its proper divisors (6747885).

47235139 is an equidigital number, since it uses as much as digits as its factorization.

47235139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6747884.

The product of its digits is 22680, while the sum is 34.

The square root of 47235139 is about 6872.7824787345. The cubic root of 47235139 is about 361.4834339333.

It can be divided in two parts, 47235 and 139, that added together give a palindrome (47374).

The spelling of 47235139 in words is "forty-seven million, two hundred thirty-five thousand, one hundred thirty-nine".