47487393 has 6 divisors (see below), whose sum is σ = 68592914. Its totient is φ = 31658256.

The previous prime is 47487373. The next prime is 47487397. The reversal of 47487393 is 39378474.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 47444544 + 42849 = 6888^2 + 207^2 .

It is not a de Polignac number, because 47487393 - 2¹² = 47483297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47487397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2638180 + ... + 2638197.

Almost surely, 2^47487393 is an apocalyptic number.

It is an amenable number.

47487393 is a deficient number, since it is larger than the sum of its proper divisors (21105521).

47487393 is a wasteful number, since it uses less digits than its factorization.

47487393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276383 (or 5276380 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 47487393 is about 6891.1097074419. The cubic root of 47487393 is about 362.1257791710.

The spelling of 47487393 in words is "forty-seven million, four hundred eighty-seven thousand, three hundred ninety-three".