921000897899 has 8 divisors (see below), whose sum is σ = 922696811520. Its totient is φ = 919306319976.

The previous prime is 921000897841. The next prime is 921000897913. The reversal of 921000897899 is 998798000129.

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

It is a cyclic number.

It is not a de Polignac number, because 921000897899 - 2¹² = 921000893803 is a prime.

It is a super-2 number, since 2×921000897899² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921000890899) 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, 1051682 + ... + 1716984.

It is an arithmetic number, because the mean of its divisors is an integer number (115337101440).

Almost surely, 2^921000897899 is an apocalyptic number.

921000897899 is a deficient number, since it is larger than the sum of its proper divisors (1695913621).

921000897899 is a wasteful number, since it uses less digits than its factorization.

921000897899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667849.

The product of its (nonzero) digits is 5878656, while the sum is 62.

The spelling of 921000897899 in words is "nine hundred twenty-one billion, eight hundred ninety-seven thousand, eight hundred ninety-nine".