353876421 has 4 divisors (see below), whose sum is σ = 471835232. Its totient is φ = 235917612.

The previous prime is 353876417. The next prime is 353876443. The reversal of 353876421 is 124678353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 353876421 - 2² = 353876417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 353876421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353876461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58979401 + ... + 58979406.

It is an arithmetic number, because the mean of its divisors is an integer number (117958808).

Almost surely, 2^353876421 is an apocalyptic number.

It is an amenable number.

353876421 is a deficient number, since it is larger than the sum of its proper divisors (117958811).

353876421 is a wasteful number, since it uses less digits than its factorization.

353876421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117958810.

The product of its digits is 120960, while the sum is 39.

The square root of 353876421 is about 18811.6033606920. The cubic root of 353876421 is about 707.3220692371.

The spelling of 353876421 in words is "three hundred fifty-three million, eight hundred seventy-six thousand, four hundred twenty-one".