394307803 has 2 divisors, whose sum is σ = 394307804. Its totient is φ = 394307802.

The previous prime is 394307777. The next prime is 394307831. The reversal of 394307803 is 308703493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394307803 - 2¹³ = 394299611 is a prime.

It is not a weakly prime, because it can be changed into another prime (394307873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197153901 + 197153902.

It is an arithmetic number, because the mean of its divisors is an integer number (197153902).

Almost surely, 2^394307803 is an apocalyptic number.

394307803 is a deficient number, since it is larger than the sum of its proper divisors (1).

394307803 is an equidigital number, since it uses as much as digits as its factorization.

394307803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 394307803 is about 19857.1851731307. The cubic root of 394307803 is about 733.2945498543.

The spelling of 394307803 in words is "three hundred ninety-four million, three hundred seven thousand, eight hundred three".