393379861 has 8 divisors (see below), whose sum is σ = 449926400. Its totient is φ = 336920688.

The previous prime is 393379859. The next prime is 393379897. The reversal of 393379861 is 168973393.

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

It is a cyclic number.

It is not a de Polignac number, because 393379861 - 2¹ = 393379859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393379561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11886 + ... + 30463.

It is an arithmetic number, because the mean of its divisors is an integer number (56240800).

Almost surely, 2^393379861 is an apocalyptic number.

It is an amenable number.

393379861 is a deficient number, since it is larger than the sum of its proper divisors (56546539).

393379861 is a wasteful number, since it uses less digits than its factorization.

393379861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43683.

The product of its digits is 734832, while the sum is 49.

The square root of 393379861 is about 19833.8060139752. The cubic root of 393379861 is about 732.7188665206.

The spelling of 393379861 in words is "three hundred ninety-three million, three hundred seventy-nine thousand, eight hundred sixty-one".