349521137 has 8 divisors (see below), whose sum is σ = 413227200. Its totient is φ = 289258704.

The previous prime is 349521121. The next prime is 349521149. The reversal of 349521137 is 731125943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 349521137 - 2⁴ = 349521121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349521097 and 349521106.

It is not an unprimeable number, because it can be changed into a prime (349521637) 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, 860687 + ... + 861092.

It is an arithmetic number, because the mean of its divisors is an integer number (51653400).

Almost surely, 2^349521137 is an apocalyptic number.

It is an amenable number.

349521137 is a deficient number, since it is larger than the sum of its proper divisors (63706063).

349521137 is a wasteful number, since it uses less digits than its factorization.

349521137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721815.

The product of its digits is 22680, while the sum is 35.

The square root of 349521137 is about 18695.4844013200. The cubic root of 349521137 is about 704.4083274117.

The spelling of 349521137 in words is "three hundred forty-nine million, five hundred twenty-one thousand, one hundred thirty-seven".