395372429 has 2 divisors, whose sum is σ = 395372430. Its totient is φ = 395372428.

The previous prime is 395372377. The next prime is 395372437. The reversal of 395372429 is 924273593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382398025 + 12974404 = 19555^2 + 3602^2 .

It is an emirp because it is prime and its reverse (924273593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395372429 - 2²⁴ = 378595213 is a prime.

It is a super-2 number, since 2×395372429² = 312638715226720082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395372429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395372449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197686214 + 197686215.

It is an arithmetic number, because the mean of its divisors is an integer number (197686215).

Almost surely, 2^395372429 is an apocalyptic number.

It is an amenable number.

395372429 is a deficient number, since it is larger than the sum of its proper divisors (1).

395372429 is an equidigital number, since it uses as much as digits as its factorization.

395372429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 395372429 is about 19883.9741751995. The cubic root of 395372429 is about 733.9539187339.

The spelling of 395372429 in words is "three hundred ninety-five million, three hundred seventy-two thousand, four hundred twenty-nine".