890121867 has 8 divisors (see below), whose sum is σ = 1204543296. Its totient is φ = 584557512.

The previous prime is 890121863. The next prime is 890121889. The reversal of 890121867 is 768121098.

890121867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 890121867 - 2² = 890121863 is a prime.

It is a super-2 number, since 2×890121867² = 1584633876223131378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (890121863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2214033 + ... + 2214434.

It is an arithmetic number, because the mean of its divisors is an integer number (150567912).

Almost surely, 2^890121867 is an apocalyptic number.

890121867 is a deficient number, since it is larger than the sum of its proper divisors (314421429).

890121867 is a wasteful number, since it uses less digits than its factorization.

890121867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428537.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 890121867 is about 29834.9102059986. The cubic root of 890121867 is about 961.9440736819.

The spelling of 890121867 in words is "eight hundred ninety million, one hundred twenty-one thousand, eight hundred sixty-seven".