450418139 has 4 divisors (see below), whose sum is σ = 450484224. Its totient is φ = 450352056.

The previous prime is 450418121. The next prime is 450418141. The reversal of 450418139 is 931814054.

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 450418139 - 2¹² = 450414043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450418099 and 450418108.

It is not an unprimeable number, because it can be changed into a prime (450418109) 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, 21467 + ... + 36900.

It is an arithmetic number, because the mean of its divisors is an integer number (112621056).

Almost surely, 2^450418139 is an apocalyptic number.

450418139 is a deficient number, since it is larger than the sum of its proper divisors (66085).

450418139 is an equidigital number, since it uses as much as digits as its factorization.

450418139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66084.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 450418139 is about 21223.0567779479. The cubic root of 450418139 is about 766.5467099234.

The spelling of 450418139 in words is "four hundred fifty million, four hundred eighteen thousand, one hundred thirty-nine".