546972391 has 8 divisors (see below), whose sum is σ = 625566240. Its totient is φ = 468492288.

The previous prime is 546972359. The next prime is 546972403. The reversal of 546972391 is 193279645.

It is a happy number.

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 546972391 - 2⁵ = 546972359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546972301) 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 7 ways as a sum of consecutive naturals, for example, 17866 + ... + 37591.

It is an arithmetic number, because the mean of its divisors is an integer number (78195780).

Almost surely, 2^546972391 is an apocalyptic number.

546972391 is a deficient number, since it is larger than the sum of its proper divisors (78593849).

546972391 is a wasteful number, since it uses less digits than its factorization.

546972391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56873.

The product of its digits is 408240, while the sum is 46.

The square root of 546972391 is about 23387.4408818066. The cubic root of 546972391 is about 817.8151190343.

The spelling of 546972391 in words is "five hundred forty-six million, nine hundred seventy-two thousand, three hundred ninety-one".