46091991 has 16 divisors (see below), whose sum is σ = 69356160. Its totient is φ = 26970720.

The previous prime is 46091989. The next prime is 46092017. The reversal of 46091991 is 19919064.

It is not a de Polignac number, because 46091991 - 2¹ = 46091989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46091911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23125 + ... + 25038.

It is an arithmetic number, because the mean of its divisors is an integer number (4334760).

Almost surely, 2^46091991 is an apocalyptic number.

46091991 is a deficient number, since it is larger than the sum of its proper divisors (23264169).

46091991 is a wasteful number, since it uses less digits than its factorization.

46091991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48206.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 46091991 is about 6789.1082625040. The cubic root of 46091991 is about 358.5434745532.

The spelling of 46091991 in words is "forty-six million, ninety-one thousand, nine hundred ninety-one".