47139733 has 4 divisors (see below), whose sum is σ = 47511040. Its totient is φ = 46768428.

The previous prime is 47139727. The next prime is 47139749. The reversal of 47139733 is 33793174.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33793174 = 2 ⋅16896587.

It is a cyclic number.

It is not a de Polignac number, because 47139733 - 2¹³ = 47131541 is a prime.

It is a super-2 number, since 2×47139733² = 4444308854622578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47139692 and 47139701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47139713) 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, 185463 + ... + 185716.

It is an arithmetic number, because the mean of its divisors is an integer number (11877760).

Almost surely, 2^47139733 is an apocalyptic number.

It is an amenable number.

47139733 is a deficient number, since it is larger than the sum of its proper divisors (371307).

47139733 is a wasteful number, since it uses less digits than its factorization.

47139733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371306.

The product of its digits is 47628, while the sum is 37.

The square root of 47139733 is about 6865.8381134425. The cubic root of 47139733 is about 361.2398939555.

It can be divided in two parts, 471 and 39733, that added together give a palindrome (40204).

The spelling of 47139733 in words is "forty-seven million, one hundred thirty-nine thousand, seven hundred thirty-three".