349450639 has 8 divisors (see below), whose sum is σ = 355975232. Its totient is φ = 342951840.

The previous prime is 349450601. The next prime is 349450643. The reversal of 349450639 is 936054943.

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

It is a cyclic number.

It is not a de Polignac number, because 349450639 - 2⁷ = 349450511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349450595 and 349450604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349459639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22057 + ... + 34429.

It is an arithmetic number, because the mean of its divisors is an integer number (44496904).

Almost surely, 2^349450639 is an apocalyptic number.

349450639 is a deficient number, since it is larger than the sum of its proper divisors (6524593).

349450639 is a wasteful number, since it uses less digits than its factorization.

349450639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12897.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 349450639 is about 18693.5988776907. The cubic root of 349450639 is about 704.3609647850.

The spelling of 349450639 in words is "three hundred forty-nine million, four hundred fifty thousand, six hundred thirty-nine".