999146773 has 4 divisors (see below), whose sum is σ = 1033600140. Its totient is φ = 964693408.

The previous prime is 999146747. The next prime is 999146789. The reversal of 999146773 is 377641999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 764964964 + 234181809 = 27658^2 + 15303^2 .

It is a cyclic number.

It is not a de Polignac number, because 999146773 - 2⁵ = 999146741 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 (999146713) 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, 17226640 + ... + 17226697.

It is an arithmetic number, because the mean of its divisors is an integer number (258400035).

Almost surely, 2^999146773 is an apocalyptic number.

It is an amenable number.

999146773 is a deficient number, since it is larger than the sum of its proper divisors (34453367).

999146773 is a wasteful number, since it uses less digits than its factorization.

999146773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34453366.

The product of its digits is 2571912, while the sum is 55.

The square root of 999146773 is about 31609.2830193916. The cubic root of 999146773 is about 999.7155100732.

The spelling of 999146773 in words is "nine hundred ninety-nine million, one hundred forty-six thousand, seven hundred seventy-three".