395042407 has 2 divisors, whose sum is σ = 395042408. Its totient is φ = 395042406.

The previous prime is 395042293. The next prime is 395042441. The reversal of 395042407 is 704240593.

It is an a-pointer prime, because the next prime (395042441) can be obtained adding 395042407 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395042407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395042467) 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, 197521203 + 197521204.

It is an arithmetic number, because the mean of its divisors is an integer number (197521204).

Almost surely, 2^395042407 is an apocalyptic number.

395042407 is a deficient number, since it is larger than the sum of its proper divisors (1).

395042407 is an equidigital number, since it uses as much as digits as its factorization.

395042407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 395042407 is about 19875.6737495865. The cubic root of 395042407 is about 733.7496485753.

The spelling of 395042407 in words is "three hundred ninety-five million, forty-two thousand, four hundred seven".