47408491 has 8 divisors (see below), whose sum is σ = 51562224. Its totient is φ = 43327200.

The previous prime is 47408479. The next prime is 47408513. The reversal of 47408491 is 19480474.

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 47408491 - 2¹⁹ = 46884203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47408491.

It is not an unprimeable number, because it can be changed into a prime (47408411) 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, 16741 + ... + 19366.

It is an arithmetic number, because the mean of its divisors is an integer number (6445278).

Almost surely, 2^47408491 is an apocalyptic number.

47408491 is a deficient number, since it is larger than the sum of its proper divisors (4153733).

47408491 is a wasteful number, since it uses less digits than its factorization.

47408491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36221.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 47408491 is about 6885.3824149425. The cubic root of 47408491 is about 361.9251063485.

It can be divided in two parts, 4740 and 8491, that added together give a palindrome (13231).

The spelling of 47408491 in words is "forty-seven million, four hundred eight thousand, four hundred ninety-one".