397152127 has 2 divisors, whose sum is σ = 397152128. Its totient is φ = 397152126.

The previous prime is 397152097. The next prime is 397152131. The reversal of 397152127 is 721251793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397152127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397152227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198576063 + 198576064.

It is an arithmetic number, because the mean of its divisors is an integer number (198576064).

Almost surely, 2^397152127 is an apocalyptic number.

397152127 is a deficient number, since it is larger than the sum of its proper divisors (1).

397152127 is an equidigital number, since it uses as much as digits as its factorization.

397152127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 397152127 is about 19928.6759971655. The cubic root of 397152127 is about 735.0535244160.

The spelling of 397152127 in words is "three hundred ninety-seven million, one hundred fifty-two thousand, one hundred twenty-seven".