450039013 has 4 divisors (see below), whose sum is σ = 450223468. Its totient is φ = 449854560.

The previous prime is 450038993. The next prime is 450039043. The reversal of 450039013 is 310930054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313219204 + 136819809 = 17698^2 + 11697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450039013 is a prime.

It is a super-2 number, since 2×450039013² = 405070226444028338, 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 (450039043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88518 + ... + 93463.

It is an arithmetic number, because the mean of its divisors is an integer number (112555867).

Almost surely, 2^450039013 is an apocalyptic number.

It is an amenable number.

450039013 is a deficient number, since it is larger than the sum of its proper divisors (184455).

450039013 is a wasteful number, since it uses less digits than its factorization.

450039013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184454.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 450039013 is about 21214.1229608956. The cubic root of 450039013 is about 766.3315769609.

Adding to 450039013 its reverse (310930054), we get a palindrome (760969067).

The spelling of 450039013 in words is "four hundred fifty million, thirty-nine thousand, thirteen".