397229401 has 2 divisors, whose sum is σ = 397229402. Its totient is φ = 397229400.

The previous prime is 397229387. The next prime is 397229411. The reversal of 397229401 is 104922793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244953801 + 152275600 = 15651^2 + 12340^2 .

It is a cyclic number.

It is not a de Polignac number, because 397229401 - 2⁵ = 397229369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (397229411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198614700 + 198614701.

It is an arithmetic number, because the mean of its divisors is an integer number (198614701).

Almost surely, 2^397229401 is an apocalyptic number.

It is an amenable number.

397229401 is a deficient number, since it is larger than the sum of its proper divisors (1).

397229401 is an equidigital number, since it uses as much as digits as its factorization.

397229401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 397229401 is about 19930.6146668887. The cubic root of 397229401 is about 735.1011945140.

The spelling of 397229401 in words is "three hundred ninety-seven million, two hundred twenty-nine thousand, four hundred one".