47091491 has 8 divisors (see below), whose sum is σ = 48492864. Its totient is φ = 45696960.

The previous prime is 47091437. The next prime is 47091503. The reversal of 47091491 is 19419074.

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 47091491 - 2⁶ = 47091427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47091431) 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, 14471 + ... + 17423.

It is an arithmetic number, because the mean of its divisors is an integer number (6061608).

Almost surely, 2^47091491 is an apocalyptic number.

47091491 is a deficient number, since it is larger than the sum of its proper divisors (1401373).

47091491 is a wasteful number, since it uses less digits than its factorization.

47091491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 47091491 is about 6862.3240232446. The cubic root of 47091491 is about 361.1166229761.

The spelling of 47091491 in words is "forty-seven million, ninety-one thousand, four hundred ninety-one".