349398885 has 64 divisors (see below), whose sum is σ = 653184000. Its totient is φ = 157685760.

The previous prime is 349398869. The next prime is 349398887. The reversal of 349398885 is 588893943.

It is not a de Polignac number, because 349398885 - 2⁴ = 349398869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349398887) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184021 + ... + 185909.

It is an arithmetic number, because the mean of its divisors is an integer number (10206000).

Almost surely, 2^349398885 is an apocalyptic number.

It is an amenable number.

349398885 is a deficient number, since it is larger than the sum of its proper divisors (303785115).

349398885 is a wasteful number, since it uses less digits than its factorization.

349398885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its digits is 7464960, while the sum is 57.

The square root of 349398885 is about 18692.2145557984. The cubic root of 349398885 is about 704.3261908732.

It can be divided in two parts, 3493 and 98885, that added together give a triangular number (102378 = T₄₅₂).

The spelling of 349398885 in words is "three hundred forty-nine million, three hundred ninety-eight thousand, eight hundred eighty-five".