349881864 has 32 divisors (see below), whose sum is σ = 896041440. Its totient is φ = 113782400.

The previous prime is 349881863. The next prime is 349881881. The reversal of 349881864 is 468188943.

It is a super-2 number, since 2×349881864² = 244834637512228992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (349881863) 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, 176802 + ... + 178769.

It is an arithmetic number, because the mean of its divisors is an integer number (28001295).

Almost surely, 2^349881864 is an apocalyptic number.

It is an amenable number.

349881864 is an abundant number, since it is smaller than the sum of its proper divisors (546159576).

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

349881864 is a wasteful number, since it uses less digits than its factorization.

349881864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355621 (or 355617 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 349881864 is about 18705.1293499938. The cubic root of 349881864 is about 704.6505747903.

The spelling of 349881864 in words is "three hundred forty-nine million, eight hundred eighty-one thousand, eight hundred sixty-four".