378679933 has 2 divisors, whose sum is σ = 378679934. Its totient is φ = 378679932.

The previous prime is 378679927. The next prime is 378679957. The reversal of 378679933 is 339976873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301994884 + 76685049 = 17378^2 + 8757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378679933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378679963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189339966 + 189339967.

It is an arithmetic number, because the mean of its divisors is an integer number (189339967).

Almost surely, 2^378679933 is an apocalyptic number.

It is an amenable number.

378679933 is a deficient number, since it is larger than the sum of its proper divisors (1).

378679933 is an equidigital number, since it uses as much as digits as its factorization.

378679933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 55.

The square root of 378679933 is about 19459.7002289347. The cubic root of 378679933 is about 723.4759474204.

The spelling of 378679933 in words is "three hundred seventy-eight million, six hundred seventy-nine thousand, nine hundred thirty-three".