349990236 has 18 divisors (see below), whose sum is σ = 884697632. Its totient is φ = 116663400.

The previous prime is 349990229. The next prime is 349990243. The reversal of 349990236 is 632099943.

It is an interprime number because it is at equal distance from previous prime (349990229) and next prime (349990243).

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 349990191 and 349990200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4860940 + ... + 4861011.

Almost surely, 2^349990236 is an apocalyptic number.

349990236 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

349990236 is an abundant number, since it is smaller than the sum of its proper divisors (534707396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349990236 is a wasteful number, since it uses less digits than its factorization.

349990236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721961 (or 9721956 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 349990236 is about 18708.0259781731. The cubic root of 349990236 is about 704.7233198289.

The spelling of 349990236 in words is "three hundred forty-nine million, nine hundred ninety thousand, two hundred thirty-six".