349481021 has 8 divisors (see below), whose sum is σ = 374532864. Its totient is φ = 325250640.

The previous prime is 349480981. The next prime is 349481057. The reversal of 349481021 is 120184943.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349481021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349481221) 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, 204485 + ... + 206186.

It is an arithmetic number, because the mean of its divisors is an integer number (46816608).

Almost surely, 2^349481021 is an apocalyptic number.

It is an amenable number.

349481021 is a deficient number, since it is larger than the sum of its proper divisors (25051843).

349481021 is a wasteful number, since it uses less digits than its factorization.

349481021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410731.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 349481021 is about 18694.4114911382. The cubic root of 349481021 is about 704.3813770858.

The spelling of 349481021 in words is "three hundred forty-nine million, four hundred eighty-one thousand, twenty-one".