349211870 has 16 divisors (see below), whose sum is σ = 718378848. Its totient is φ = 119729760.

The previous prime is 349211861. The next prime is 349211879. The reversal of 349211870 is 78112943.

It is an interprime number because it is at equal distance from previous prime (349211861) and next prime (349211879).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 349211870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349211879) 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, 2494301 + ... + 2494440.

It is an arithmetic number, because the mean of its divisors is an integer number (44898678).

Almost surely, 2^349211870 is an apocalyptic number.

349211870 is an abundant number, since it is smaller than the sum of its proper divisors (369166978).

349211870 is a wasteful number, since it uses less digits than its factorization.

349211870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988755.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 349211870 is about 18687.2114024538. The cubic root of 349211870 is about 704.2005054211.

The spelling of 349211870 in words is "three hundred forty-nine million, two hundred eleven thousand, eight hundred seventy".