45931947 has 4 divisors (see below), whose sum is σ = 61242600. Its totient is φ = 30621296.

The previous prime is 45931903. The next prime is 45931967. The reversal of 45931947 is 74913954.

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 45931947 - 2¹¹ = 45929899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45931899 and 45931908.

It is not an unprimeable number, because it can be changed into a prime (45931967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7655322 + ... + 7655327.

It is an arithmetic number, because the mean of its divisors is an integer number (15310650).

Almost surely, 2^45931947 is an apocalyptic number.

45931947 is a deficient number, since it is larger than the sum of its proper divisors (15310653).

45931947 is a wasteful number, since it uses less digits than its factorization.

45931947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310652.

The product of its digits is 136080, while the sum is 42.

The square root of 45931947 is about 6777.3111925010. The cubic root of 45931947 is about 358.1280063038.

The spelling of 45931947 in words is "forty-five million, nine hundred thirty-one thousand, nine hundred forty-seven".