999752969 has 2 divisors, whose sum is σ = 999752970. Its totient is φ = 999752968.

The previous prime is 999752959. The next prime is 999752981. The reversal of 999752969 is 969257999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975625225 + 24127744 = 31235^2 + 4912^2 .

It is a cyclic number.

It is not a de Polignac number, because 999752969 - 2⁴ = 999752953 is a prime.

It is a super-2 number, since 2×999752969² = 1999011998048629922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999752959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499876484 + 499876485.

It is an arithmetic number, because the mean of its divisors is an integer number (499876485).

Almost surely, 2^999752969 is an apocalyptic number.

It is an amenable number.

999752969 is a deficient number, since it is larger than the sum of its proper divisors (1).

999752969 is an equidigital number, since it uses as much as digits as its factorization.

999752969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24800580, while the sum is 65.

The square root of 999752969 is about 31618.8704573709. The cubic root of 999752969 is about 999.9176495519.

The spelling of 999752969 in words is "nine hundred ninety-nine million, seven hundred fifty-two thousand, nine hundred sixty-nine".