353713421 has 4 divisors (see below), whose sum is σ = 354623100. Its totient is φ = 352803744.

The previous prime is 353713417. The next prime is 353713453. The reversal of 353713421 is 124317353.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130210921 + 223502500 = 11411^2 + 14950^2 .

It is a cyclic number.

It is not a de Polignac number, because 353713421 - 2² = 353713417 is a prime.

It is a super-2 number, since 2×353713421² = 250226368391046482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353713471) 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, 454256 + ... + 455033.

It is an arithmetic number, because the mean of its divisors is an integer number (88655775).

Almost surely, 2^353713421 is an apocalyptic number.

It is an amenable number.

353713421 is a deficient number, since it is larger than the sum of its proper divisors (909679).

353713421 is an equidigital number, since it uses as much as digits as its factorization.

353713421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909678.

The product of its digits is 7560, while the sum is 29.

The square root of 353713421 is about 18807.2704292781. The cubic root of 353713421 is about 707.2134520317.

The spelling of 353713421 in words is "three hundred fifty-three million, seven hundred thirteen thousand, four hundred twenty-one".