7689992021 has 8 divisors (see below), whose sum is σ = 7887300288. Its totient is φ = 7493148000.

The previous prime is 7689992003. The next prime is 7689992047. The reversal of 7689992021 is 1202999867.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7689992021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7689995021) 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, 82385 + ... + 148886.

It is an arithmetic number, because the mean of its divisors is an integer number (985912536).

Almost surely, 2^7689992021 is an apocalyptic number.

It is an amenable number.

7689992021 is a deficient number, since it is larger than the sum of its proper divisors (197308267).

7689992021 is a wasteful number, since it uses less digits than its factorization.

7689992021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232123.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 7689992021 is about 87692.5995794400. The cubic root of 7689992021 is about 1973.8249290333.

The spelling of 7689992021 in words is "seven billion, six hundred eighty-nine million, nine hundred ninety-two thousand, twenty-one".