47490393 has 4 divisors (see below), whose sum is σ = 63320528. Its totient is φ = 31660260.

The previous prime is 47490383. The next prime is 47490413. The reversal of 47490393 is 39309474.

47490393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 47490393 - 2¹⁰ = 47489369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47490383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7915063 + ... + 7915068.

It is an arithmetic number, because the mean of its divisors is an integer number (15830132).

Almost surely, 2^47490393 is an apocalyptic number.

It is an amenable number.

47490393 is a deficient number, since it is larger than the sum of its proper divisors (15830135).

47490393 is a wasteful number, since it uses less digits than its factorization.

47490393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830134.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 47490393 is about 6891.3273757673. The cubic root of 47490393 is about 362.1334047350.

The spelling of 47490393 in words is "forty-seven million, four hundred ninety thousand, three hundred ninety-three".