890680443 has 4 divisors (see below), whose sum is σ = 1187573928. Its totient is φ = 593786960.

The previous prime is 890680421. The next prime is 890680477. The reversal of 890680443 is 344086098.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 890680443 - 2²⁰ = 889631867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 890680395 and 890680404.

It is not an unprimeable number, because it can be changed into a prime (890680943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148446738 + ... + 148446743.

It is an arithmetic number, because the mean of its divisors is an integer number (296893482).

Almost surely, 2^890680443 is an apocalyptic number.

890680443 is a deficient number, since it is larger than the sum of its proper divisors (296893485).

890680443 is a wasteful number, since it uses less digits than its factorization.

890680443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296893484.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 890680443 is about 29844.2698520168. The cubic root of 890680443 is about 962.1452470785.

The spelling of 890680443 in words is "eight hundred ninety million, six hundred eighty thousand, four hundred forty-three".