349907481 has 72 divisors (see below), whose sum is σ = 679277664. Its totient is φ = 171037440.

The previous prime is 349907473. The next prime is 349907507. The reversal of 349907481 is 184709943.

It is not a de Polignac number, because 349907481 - 2³ = 349907473 is a prime.

It is a super-2 number, since 2×349907481² = 244870490519530722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (349907461) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 80346 + ... + 84588.

It is an arithmetic number, because the mean of its divisors is an integer number (9434412).

Almost surely, 2^349907481 is an apocalyptic number.

It is an amenable number.

349907481 is a deficient number, since it is larger than the sum of its proper divisors (329370183).

349907481 is a wasteful number, since it uses less digits than its factorization.

349907481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291 (or 4281 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 349907481 is about 18705.8140961574. The cubic root of 349907481 is about 704.6677716360.

The spelling of 349907481 in words is "three hundred forty-nine million, nine hundred seven thousand, four hundred eighty-one".