455739981 has 8 divisors (see below), whose sum is σ = 608723520. Its totient is φ = 303291552.

The previous prime is 455739937. The next prime is 455740001. The reversal of 455739981 is 189937554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 455739981 - 2¹⁰ = 455738957 is a prime.

It is a super-2 number, since 2×455739981² = 415397860563760722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455749981) 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, 131785 + ... + 135198.

It is an arithmetic number, because the mean of its divisors is an integer number (76090440).

Almost surely, 2^455739981 is an apocalyptic number.

It is an amenable number.

455739981 is a deficient number, since it is larger than the sum of its proper divisors (152983539).

455739981 is a wasteful number, since it uses less digits than its factorization.

455739981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267555.

The product of its digits is 1360800, while the sum is 51.

The square root of 455739981 is about 21348.0673832551. The cubic root of 455739981 is about 769.5538996942.

The spelling of 455739981 in words is "four hundred fifty-five million, seven hundred thirty-nine thousand, nine hundred eighty-one".