999969763 has 4 divisors (see below), whose sum is σ = 1076890528. Its totient is φ = 923049000.

The previous prime is 999969749. The next prime is 999969769. The reversal of 999969763 is 367969999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 367969999 = 313 ⋅1175623.

It is a cyclic number.

It is not a de Polignac number, because 999969763 - 2⁹ = 999969251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999969769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38460363 + ... + 38460388.

It is an arithmetic number, because the mean of its divisors is an integer number (269222632).

Almost surely, 2^999969763 is an apocalyptic number.

999969763 is a deficient number, since it is larger than the sum of its proper divisors (76920765).

999969763 is a wasteful number, since it uses less digits than its factorization.

999969763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76920764.

The product of its digits is 44641044, while the sum is 67.

The square root of 999969763 is about 31622.2985091217. The cubic root of 999969763 is about 999.9899208984.

The spelling of 999969763 in words is "nine hundred ninety-nine million, nine hundred sixty-nine thousand, seven hundred sixty-three".