397434403 has 2 divisors, whose sum is σ = 397434404. Its totient is φ = 397434402.

The previous prime is 397434379. The next prime is 397434407. The reversal of 397434403 is 304434793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397434403 - 2⁵ = 397434371 is a prime.

It is not a weakly prime, because it can be changed into another prime (397434407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198717201 + 198717202.

It is an arithmetic number, because the mean of its divisors is an integer number (198717202).

Almost surely, 2^397434403 is an apocalyptic number.

397434403 is a deficient number, since it is larger than the sum of its proper divisors (1).

397434403 is an equidigital number, since it uses as much as digits as its factorization.

397434403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 397434403 is about 19935.7568955884. The cubic root of 397434403 is about 735.2276296824.

The spelling of 397434403 in words is "three hundred ninety-seven million, four hundred thirty-four thousand, four hundred three".