397075429 has 2 divisors, whose sum is σ = 397075430. Its totient is φ = 397075428.

The previous prime is 397075423. The next prime is 397075463. The reversal of 397075429 is 924570793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295771204 + 101304225 = 17198^2 + 10065^2 .

It is a cyclic number.

It is not a de Polignac number, because 397075429 - 2¹⁵ = 397042661 is a prime.

It is a super-3 number, since 3×397075429³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397075423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198537714 + 198537715.

It is an arithmetic number, because the mean of its divisors is an integer number (198537715).

Almost surely, 2^397075429 is an apocalyptic number.

It is an amenable number.

397075429 is a deficient number, since it is larger than the sum of its proper divisors (1).

397075429 is an equidigital number, since it uses as much as digits as its factorization.

397075429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 397075429 is about 19926.7515917673. The cubic root of 397075429 is about 735.0062035357.

The spelling of 397075429 in words is "three hundred ninety-seven million, seventy-five thousand, four hundred twenty-nine".