1030399969 has 2 divisors, whose sum is σ = 1030399970. Its totient is φ = 1030399968.

The previous prime is 1030399967. The next prime is 1030400003. The reversal of 1030399969 is 9699930301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954501025 + 75898944 = 30895^2 + 8712^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030399969 - 2¹ = 1030399967 is a prime.

It is a super-2 number, since 2×1030399969² = 2123448192230401922, which contains 22 as substring.

Together with 1030399967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1030399967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515199984 + 515199985.

It is an arithmetic number, because the mean of its divisors is an integer number (515199985).

Almost surely, 2^1030399969 is an apocalyptic number.

It is an amenable number.

1030399969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030399969 is an equidigital number, since it uses as much as digits as its factorization.

1030399969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 1030399969 is about 32099.8437535138. The cubic root of 1030399969 is about 1010.0323386045.

The spelling of 1030399969 in words is "one billion, thirty million, three hundred ninety-nine thousand, nine hundred sixty-nine".