455554639 has 4 divisors (see below), whose sum is σ = 456019056. Its totient is φ = 455090224.

The previous prime is 455554637. The next prime is 455554643. The reversal of 455554639 is 936455554.

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 455554639 - 2¹ = 455554637 is a prime.

It is a super-2 number, since 2×455554639² = 415060058228840642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455554637) 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, 230734 + ... + 232699.

It is an arithmetic number, because the mean of its divisors is an integer number (114004764).

Almost surely, 2^455554639 is an apocalyptic number.

455554639 is a deficient number, since it is larger than the sum of its proper divisors (464417).

455554639 is an equidigital number, since it uses as much as digits as its factorization.

455554639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464416.

The product of its digits is 1620000, while the sum is 46.

The square root of 455554639 is about 21343.7259868093. The cubic root of 455554639 is about 769.4495638855.

The spelling of 455554639 in words is "four hundred fifty-five million, five hundred fifty-four thousand, six hundred thirty-nine".