890041840 has 40 divisors (see below), whose sum is σ = 2071608480. Its totient is φ = 355627776.

The previous prime is 890041829. The next prime is 890041853. The reversal of 890041840 is 48140098.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 890041796 and 890041805.

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, 74181 + ... + 85339.

It is an arithmetic number, because the mean of its divisors is an integer number (51790212).

Almost surely, 2^890041840 is an apocalyptic number.

890041840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

890041840 is an abundant number, since it is smaller than the sum of its proper divisors (1181566640).

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

890041840 is a wasteful number, since it uses less digits than its factorization.

890041840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169 (or 12163 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 890041840 is about 29833.5690121045. The cubic root of 890041840 is about 961.9152447435.

The spelling of 890041840 in words is "eight hundred ninety million, forty-one thousand, eight hundred forty".