379816993 has 2 divisors, whose sum is σ = 379816994. Its totient is φ = 379816992.

The previous prime is 379816981. The next prime is 379816999. The reversal of 379816993 is 399618973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224640144 + 155176849 = 14988^2 + 12457^2 .

It is a cyclic number.

It is not a de Polignac number, because 379816993 - 2⁵ = 379816961 is a prime.

It is not a weakly prime, because it can be changed into another prime (379816999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189908496 + 189908497.

It is an arithmetic number, because the mean of its divisors is an integer number (189908497).

Almost surely, 2^379816993 is an apocalyptic number.

It is an amenable number.

379816993 is a deficient number, since it is larger than the sum of its proper divisors (1).

379816993 is an equidigital number, since it uses as much as digits as its factorization.

379816993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 379816993 is about 19488.8940938166. The cubic root of 379816993 is about 724.1993495037.

The spelling of 379816993 in words is "three hundred seventy-nine million, eight hundred sixteen thousand, nine hundred ninety-three".