855641369 has 8 divisors (see below), whose sum is σ = 935759520. Its totient is φ = 775912000.

The previous prime is 855641321. The next prime is 855641393. The reversal of 855641369 is 963146558.

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 855641369 - 2⁸ = 855641113 is a prime.

It is a super-2 number, since 2×855641369² = 1464244304688388322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855641869) 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, 92579 + ... + 101400.

It is an arithmetic number, because the mean of its divisors is an integer number (116969940).

Almost surely, 2^855641369 is an apocalyptic number.

It is an amenable number.

855641369 is a deficient number, since it is larger than the sum of its proper divisors (80118151).

855641369 is a wasteful number, since it uses less digits than its factorization.

855641369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194391.

The product of its digits is 777600, while the sum is 47.

The square root of 855641369 is about 29251.3481569653. The cubic root of 855641369 is about 949.3592610178.

The spelling of 855641369 in words is "eight hundred fifty-five million, six hundred forty-one thousand, three hundred sixty-nine".