995722639 has 4 divisors (see below), whose sum is σ = 995790256. Its totient is φ = 995655024.

The previous prime is 995722613. The next prime is 995722681. The reversal of 995722639 is 936227599.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 936227599 = 2389 ⋅391891.

It is a cyclic number.

It is not a de Polignac number, because 995722639 - 2⁹ = 995722127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995725639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299 + ... + 44644.

It is an arithmetic number, because the mean of its divisors is an integer number (248947564).

Almost surely, 2^995722639 is an apocalyptic number.

995722639 is a deficient number, since it is larger than the sum of its proper divisors (67617).

995722639 is a wasteful number, since it uses less digits than its factorization.

995722639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67616.

The product of its digits is 1837080, while the sum is 52.

The square root of 995722639 is about 31555.0731103574. The cubic root of 995722639 is about 998.5721752869.

The spelling of 995722639 in words is "nine hundred ninety-five million, seven hundred twenty-two thousand, six hundred thirty-nine".