801121044 has 24 divisors (see below), whose sum is σ = 1880480448. Its totient is φ = 265440640.

The previous prime is 801121037. The next prime is 801121051. The reversal of 801121044 is 440121108.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (801121037) and next prime (801121051).

It is a self number, because there is not a number n which added to its sum of digits gives 801121044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197877 + ... + 201884.

It is an arithmetic number, because the mean of its divisors is an integer number (78353352).

Almost surely, 2^801121044 is an apocalyptic number.

It is an amenable number.

801121044 is an abundant number, since it is smaller than the sum of its proper divisors (1079359404).

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

801121044 is a wasteful number, since it uses less digits than its factorization.

801121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399935 (or 399933 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 801121044 is about 28304.0817551109. The cubic root of 801121044 is about 928.7511831121.

The spelling of 801121044 in words is "eight hundred one million, one hundred twenty-one thousand, forty-four".