47431819 has 8 divisors (see below), whose sum is σ = 52405920. Its totient is φ = 42700416.

The previous prime is 47431723. The next prime is 47431871. The reversal of 47431819 is 91813474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47431819 - 2¹¹ = 47429771 is a prime.

It is a super-2 number, since 2×47431819² = 4499554907297522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47431889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60264 + ... + 61045.

It is an arithmetic number, because the mean of its divisors is an integer number (6550740).

Almost surely, 2^47431819 is an apocalyptic number.

47431819 is a deficient number, since it is larger than the sum of its proper divisors (4974101).

47431819 is a wasteful number, since it uses less digits than its factorization.

47431819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121349.

The product of its digits is 24192, while the sum is 37.

The square root of 47431819 is about 6887.0762301575. The cubic root of 47431819 is about 361.9844600230.

The spelling of 47431819 in words is "forty-seven million, four hundred thirty-one thousand, eight hundred nineteen".