450739139 has 6 divisors (see below), whose sum is σ = 478813164. Its totient is φ = 424224800.

The previous prime is 450739099. The next prime is 450739151. The reversal of 450739139 is 931937054.

It is a de Polignac number, because none of the positive numbers 2^k-450739139 is a prime.

It is a super-2 number, since 2×450739139² = 406331542852922642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450739096 and 450739105.

It is not an unprimeable number, because it can be changed into a prime (450738139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779537 + ... + 780114.

It is an arithmetic number, because the mean of its divisors is an integer number (79802194).

Almost surely, 2^450739139 is an apocalyptic number.

450739139 is a deficient number, since it is larger than the sum of its proper divisors (28074025).

450739139 is a wasteful number, since it uses less digits than its factorization.

450739139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559685 (or 1559668 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 450739139 is about 21230.6179608602. The cubic root of 450739139 is about 766.7287652493.

The spelling of 450739139 in words is "four hundred fifty million, seven hundred thirty-nine thousand, one hundred thirty-nine".