546889391 has 2 divisors, whose sum is σ = 546889392. Its totient is φ = 546889390.

The previous prime is 546889373. The next prime is 546889393. The reversal of 546889391 is 193988645.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 546889391 - 2¹⁰ = 546888367 is a prime.

Together with 546889393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546889393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273444695 + 273444696.

It is an arithmetic number, because the mean of its divisors is an integer number (273444696).

Almost surely, 2^546889391 is an apocalyptic number.

546889391 is a deficient number, since it is larger than the sum of its proper divisors (1).

546889391 is an equidigital number, since it uses as much as digits as its factorization.

546889391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The square root of 546889391 is about 23385.6663578355. Note that the first 3 decimals coincide. The cubic root of 546889391 is about 817.7737506523.

The spelling of 546889391 in words is "five hundred forty-six million, eight hundred eighty-nine thousand, three hundred ninety-one".