1395022459 has 4 divisors (see below), whose sum is σ = 1398501720. Its totient is φ = 1391543200.

The previous prime is 1395022423. The next prime is 1395022501. The reversal of 1395022459 is 9542205931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9542205931 = 2213 ⋅4311887.

It is a cyclic number.

It is not a de Polignac number, because 1395022459 - 2²¹ = 1392925307 is a prime.

It is a super-2 number, since 2×1395022459² = 3892175322228813362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395023459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1739029 + ... + 1739830.

It is an arithmetic number, because the mean of its divisors is an integer number (349625430).

Almost surely, 2^1395022459 is an apocalyptic number.

1395022459 is a deficient number, since it is larger than the sum of its proper divisors (3479261).

1395022459 is an equidigital number, since it uses as much as digits as its factorization.

1395022459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479260.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1395022459 is about 37349.9994511379. Note that the first 3 decimals coincide. The cubic root of 1395022459 is about 1117.3615772438.

The spelling of 1395022459 in words is "one billion, three hundred ninety-five million, twenty-two thousand, four hundred fifty-nine".