801199840 has 48 divisors (see below), whose sum is σ = 2163242592. Its totient is φ = 274696704.

The previous prime is 801199837. The next prime is 801199859. The reversal of 801199840 is 48991108.

801199840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 801199793 and 801199802.

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, 356559 + ... + 358798.

It is an arithmetic number, because the mean of its divisors is an integer number (45067554).

Almost surely, 2^801199840 is an apocalyptic number.

801199840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

801199840 is an abundant number, since it is smaller than the sum of its proper divisors (1362042752).

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

801199840 is a wasteful number, since it uses less digits than its factorization.

801199840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715379 (or 715371 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 801199840 is about 28305.4736755985. The cubic root of 801199840 is about 928.7816318936.

The spelling of 801199840 in words is "eight hundred one million, one hundred ninety-nine thousand, eight hundred forty".