394149322807 has 2 divisors, whose sum is σ = 394149322808. Its totient is φ = 394149322806.

The previous prime is 394149322793. The next prime is 394149322883. The reversal of 394149322807 is 708223941493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394149322807 - 2²⁷ = 394015105079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394149322907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197074661403 + 197074661404.

It is an arithmetic number, because the mean of its divisors is an integer number (197074661404).

Almost surely, 2^394149322807 is an apocalyptic number.

394149322807 is a deficient number, since it is larger than the sum of its proper divisors (1).

394149322807 is an equidigital number, since it uses as much as digits as its factorization.

394149322807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 394149322807 in words is "three hundred ninety-four billion, one hundred forty-nine million, three hundred twenty-two thousand, eight hundred seven".