350420639 has 4 divisors (see below), whose sum is σ = 351992256. Its totient is φ = 348849024.

The previous prime is 350420627. The next prime is 350420641. The reversal of 350420639 is 936024053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936024053 = 1453 ⋅644201.

It is a cyclic number.

It is not a de Polignac number, because 350420639 - 2²⁰ = 349372063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350420699) 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 3 ways as a sum of consecutive naturals, for example, 785474 + ... + 785919.

It is an arithmetic number, because the mean of its divisors is an integer number (87998064).

Almost surely, 2^350420639 is an apocalyptic number.

350420639 is a deficient number, since it is larger than the sum of its proper divisors (1571617).

350420639 is a wasteful number, since it uses less digits than its factorization.

350420639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571616.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 350420639 is about 18719.5256083054. The cubic root of 350420639 is about 705.0120810095.

The spelling of 350420639 in words is "three hundred fifty million, four hundred twenty thousand, six hundred thirty-nine".