10399078887 has 8 divisors (see below), whose sum is σ = 14021230320. Its totient is φ = 6854823360.

The previous prime is 10399078873. The next prime is 10399078901. The reversal of 10399078887 is 78887099301.

It is an interprime number because it is at equal distance from previous prime (10399078873) and next prime (10399078901).

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

It is not a de Polignac number, because 10399078887 - 2⁷ = 10399078759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10399078887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10399078087) 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, 19473664 + ... + 19474197.

It is an arithmetic number, because the mean of its divisors is an integer number (1752653790).

Almost surely, 2^10399078887 is an apocalyptic number.

10399078887 is a deficient number, since it is larger than the sum of its proper divisors (3622151433).

10399078887 is an equidigital number, since it uses as much as digits as its factorization.

10399078887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38947953.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 10399078887 in words is "ten billion, three hundred ninety-nine million, seventy-eight thousand, eight hundred eighty-seven".