358690421 has 4 divisors (see below), whose sum is σ = 358819692. Its totient is φ = 358561152.

The previous prime is 358690411. The next prime is 358690439. The reversal of 358690421 is 124096853.

It is a happy number.

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 138909796 + 219780625 = 11786^2 + 14825^2 .

It is a cyclic number.

It is not a de Polignac number, because 358690421 - 2¹⁸ = 358428277 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 (358690411) 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, 60380 + ... + 66053.

It is an arithmetic number, because the mean of its divisors is an integer number (89704923).

Almost surely, 2^358690421 is an apocalyptic number.

It is an amenable number.

358690421 is a deficient number, since it is larger than the sum of its proper divisors (129271).

358690421 is a wasteful number, since it uses less digits than its factorization.

358690421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129270.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 358690421 is about 18939.1240821744. The cubic root of 358690421 is about 710.5150141527.

The spelling of 358690421 in words is "three hundred fifty-eight million, six hundred ninety thousand, four hundred twenty-one".