393449141 has 4 divisors (see below), whose sum is σ = 393928032. Its totient is φ = 392970252.

The previous prime is 393449137. The next prime is 393449167. The reversal of 393449141 is 141944393.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 393449141 - 2² = 393449137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393449095 and 393449104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393449041) 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, 238211 + ... + 239856.

It is an arithmetic number, because the mean of its divisors is an integer number (98482008).

Almost surely, 2^393449141 is an apocalyptic number.

It is an amenable number.

393449141 is a deficient number, since it is larger than the sum of its proper divisors (478891).

393449141 is an equidigital number, since it uses as much as digits as its factorization.

393449141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478890.

The product of its digits is 46656, while the sum is 38.

The square root of 393449141 is about 19835.5524500832. The cubic root of 393449141 is about 732.7618781983.

The spelling of 393449141 in words is "three hundred ninety-three million, four hundred forty-nine thousand, one hundred forty-one".