1249382855 has 8 divisors (see below), whose sum is σ = 1713439392. Its totient is φ = 856719648.

The previous prime is 1249382851. The next prime is 1249382861. The reversal of 1249382855 is 5582839421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1249382855 - 2² = 1249382851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249382851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17848292 + ... + 17848361.

It is an arithmetic number, because the mean of its divisors is an integer number (214179924).

Almost surely, 2^1249382855 is an apocalyptic number.

1249382855 is a deficient number, since it is larger than the sum of its proper divisors (464056537).

1249382855 is an equidigital number, since it uses as much as digits as its factorization.

1249382855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35696665.

The product of its digits is 691200, while the sum is 47.

The square root of 1249382855 is about 35346.6102335146. The cubic root of 1249382855 is about 1077.0400360197.

The spelling of 1249382855 in words is "one billion, two hundred forty-nine million, three hundred eighty-two thousand, eight hundred fifty-five".