46721191 has 4 divisors (see below), whose sum is σ = 50968584. Its totient is φ = 42473800.

The previous prime is 46721189. The next prime is 46721201. The reversal of 46721191 is 19112764.

46721191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 46721191 - 2¹ = 46721189 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46721131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123680 + ... + 2123701.

It is an arithmetic number, because the mean of its divisors is an integer number (12742146).

Almost surely, 2^46721191 is an apocalyptic number.

46721191 is a deficient number, since it is larger than the sum of its proper divisors (4247393).

46721191 is a wasteful number, since it uses less digits than its factorization.

46721191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247392.

The product of its digits is 3024, while the sum is 31.

The square root of 46721191 is about 6835.2901182027. The cubic root of 46721191 is about 360.1675942912.

The spelling of 46721191 in words is "forty-six million, seven hundred twenty-one thousand, one hundred ninety-one".