393130 has 8 divisors (see below), whose sum is σ = 707652. Its totient is φ = 157248.

The previous prime is 393121. The next prime is 393137. The reversal of 393130 is 31393.

It is a happy number.

It is a Cunningham number, because it is equal to 627²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 1 = 627^2 + 1^2 .

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

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 393098 and 393107.

It is not an unprimeable number, because it can be changed into a prime (393137) 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, 19647 + ... + 19666.

2³⁹³¹³⁰ is an apocalyptic number.

393130 is a deficient number, since it is larger than the sum of its proper divisors (314522).

393130 is a wasteful number, since it uses less digits than its factorization.

393130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39320.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 393130 is about 627.0007974477. Note that the first 3 decimals coincide. The cubic root of 393130 is about 73.2563701279.

The spelling of 393130 in words is "three hundred ninety-three thousand, one hundred thirty".