394340707 has 2 divisors, whose sum is σ = 394340708. Its totient is φ = 394340706.

The previous prime is 394340693. The next prime is 394340717. The reversal of 394340707 is 707043493.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394340707 is a prime.

It is not a weakly prime, because it can be changed into another prime (394340717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197170353 + 197170354.

It is an arithmetic number, because the mean of its divisors is an integer number (197170354).

Almost surely, 2^394340707 is an apocalyptic number.

394340707 is a deficient number, since it is larger than the sum of its proper divisors (1).

394340707 is an equidigital number, since it uses as much as digits as its factorization.

394340707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 394340707 is about 19858.0136720670. The cubic root of 394340707 is about 733.3149464857.

The spelling of 394340707 in words is "three hundred ninety-four million, three hundred forty thousand, seven hundred seven".