1395859247 has 2 divisors, whose sum is σ = 1395859248. Its totient is φ = 1395859246.

The previous prime is 1395859243. The next prime is 1395859253. The reversal of 1395859247 is 7429585931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1395859247 - 2² = 1395859243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395859243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697929623 + 697929624.

It is an arithmetic number, because the mean of its divisors is an integer number (697929624).

Almost surely, 2^1395859247 is an apocalyptic number.

1395859247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395859247 is an equidigital number, since it uses as much as digits as its factorization.

1395859247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 1395859247 is about 37361.1997532199. The cubic root of 1395859247 is about 1117.5849447046.

It can be divided in two parts, 139585924 and 7, that added together give a palindrome (139585931).

The spelling of 1395859247 in words is "one billion, three hundred ninety-five million, eight hundred fifty-nine thousand, two hundred forty-seven".