351699421 has 8 divisors (see below), whose sum is σ = 354083040. Its totient is φ = 349324368.

The previous prime is 351699419. The next prime is 351699437. The reversal of 351699421 is 124996153.

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

It is a cyclic number.

It is not a de Polignac number, because 351699421 - 2¹ = 351699419 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 (351649421) 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, 94290 + ... + 97948.

It is an arithmetic number, because the mean of its divisors is an integer number (44260380).

Almost surely, 2^351699421 is an apocalyptic number.

It is an amenable number.

351699421 is a deficient number, since it is larger than the sum of its proper divisors (2383619).

351699421 is a wasteful number, since it uses less digits than its factorization.

351699421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283.

The product of its digits is 58320, while the sum is 40.

The square root of 351699421 is about 18753.6508712304. The cubic root of 351699421 is about 705.8686347243.

The spelling of 351699421 in words is "three hundred fifty-one million, six hundred ninety-nine thousand, four hundred twenty-one".