47658491 has 4 divisors (see below), whose sum is σ = 48766872. Its totient is φ = 46550112.

The previous prime is 47658487. The next prime is 47658509. The reversal of 47658491 is 19485674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47658491 - 2² = 47658487 is a prime.

It is a super-3 number, since 3×47658491³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47658431) 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, 554126 + ... + 554211.

It is an arithmetic number, because the mean of its divisors is an integer number (12191718).

Almost surely, 2^47658491 is an apocalyptic number.

47658491 is a deficient number, since it is larger than the sum of its proper divisors (1108381).

47658491 is a wasteful number, since it uses less digits than its factorization.

47658491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108380.

The product of its digits is 241920, while the sum is 44.

The square root of 47658491 is about 6903.5129463194. The cubic root of 47658491 is about 362.5601732848.

The spelling of 47658491 in words is "forty-seven million, six hundred fifty-eight thousand, four hundred ninety-one".