8155944 has 64 divisors (see below), whose sum is σ = 23064000. Its totient is φ = 2669760.

The previous prime is 8155943. The next prime is 8155949. The reversal of 8155944 is 4495518.

It is a super-2 number, since 2×8155944² = 133038845062272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8155899 and 8155908.

It is not an unprimeable number, because it can be changed into a prime (8155943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12867 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (360375).

Almost surely, 2^8155944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8155944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11532000).

8155944 is an abundant number, since it is smaller than the sum of its proper divisors (14908056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8155944 is a wasteful number, since it uses less digits than its factorization.

8155944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 685 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 8155944 is about 2855.8613411719. The cubic root of 8155944 is about 201.2911796704.

The spelling of 8155944 in words is "eight million, one hundred fifty-five thousand, nine hundred forty-four".