1295727398 has 16 divisors (see below), whose sum is σ = 2292900864. Its totient is φ = 537398280.

The previous prime is 1295727397. The next prime is 1295727463. The reversal of 1295727398 is 8937275921.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295727397) 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 7 ways as a sum of consecutive naturals, for example, 1492340 + ... + 1493207.

It is an arithmetic number, because the mean of its divisors is an integer number (143306304).

Almost surely, 2^1295727398 is an apocalyptic number.

1295727398 is a deficient number, since it is larger than the sum of its proper divisors (997173466).

1295727398 is a wasteful number, since it uses less digits than its factorization.

1295727398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985587.

The product of its digits is 1905120, while the sum is 53.

The square root of 1295727398 is about 35996.2136619951. The cubic root of 1295727398 is about 1090.1959073285.

The spelling of 1295727398 in words is "one billion, two hundred ninety-five million, seven hundred twenty-seven thousand, three hundred ninety-eight".