7902719997 has 8 divisors (see below), whose sum is σ = 10568795040. Its totient is φ = 5252562480.

The previous prime is 7902719987. The next prime is 7902720031. The reversal of 7902719997 is 7999172097.

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

It is not a de Polignac number, because 7902719997 - 2¹² = 7902715901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7902719997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7902719917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3978222 + ... + 3980207.

It is an arithmetic number, because the mean of its divisors is an integer number (1321099380).

Almost surely, 2^7902719997 is an apocalyptic number.

It is an amenable number.

7902719997 is a deficient number, since it is larger than the sum of its proper divisors (2666075043).

7902719997 is a wasteful number, since it uses less digits than its factorization.

7902719997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958763.

The product of its (nonzero) digits is 4500846, while the sum is 60.

The square root of 7902719997 is about 88897.2440348968. The cubic root of 7902719997 is about 1991.8602502624.

The spelling of 7902719997 in words is "seven billion, nine hundred two million, seven hundred nineteen thousand, nine hundred ninety-seven".