999752513 has 8 divisors (see below), whose sum is σ = 1018018848. Its totient is φ = 981634464.

The previous prime is 999752503. The next prime is 999752521. The reversal of 999752513 is 315257999.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 999752513 - 2¹² = 999748417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999752503) 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, 23420 + ... + 50477.

It is an arithmetic number, because the mean of its divisors is an integer number (127252356).

Almost surely, 2^999752513 is an apocalyptic number.

It is an amenable number.

999752513 is a deficient number, since it is larger than the sum of its proper divisors (18266335).

999752513 is a wasteful number, since it uses less digits than its factorization.

999752513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74143.

The product of its digits is 765450, while the sum is 50.

The square root of 999752513 is about 31618.8632464863. The cubic root of 999752513 is about 999.9174975269.

The spelling of 999752513 in words is "nine hundred ninety-nine million, seven hundred fifty-two thousand, five hundred thirteen".