47539331 has 4 divisors (see below), whose sum is σ = 54330672. Its totient is φ = 40747992.

The previous prime is 47539319. The next prime is 47539333. The reversal of 47539331 is 13393574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13393574 = 2 ⋅6696787.

It is a cyclic number.

It is not a de Polignac number, because 47539331 - 2¹⁴ = 47522947 is a prime.

It is a super-2 number, since 2×47539331² = 4519975983855122, 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 = 47539291 and 47539300.

It is not an unprimeable number, because it can be changed into a prime (47539333) 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, 3395660 + ... + 3395673.

It is an arithmetic number, because the mean of its divisors is an integer number (13582668).

Almost surely, 2^47539331 is an apocalyptic number.

47539331 is a deficient number, since it is larger than the sum of its proper divisors (6791341).

47539331 is an equidigital number, since it uses as much as digits as its factorization.

47539331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791340.

The product of its digits is 34020, while the sum is 35.

The square root of 47539331 is about 6894.8771562661. The cubic root of 47539331 is about 362.2577526960.

The spelling of 47539331 in words is "forty-seven million, five hundred thirty-nine thousand, three hundred thirty-one".