1030400993 has 2 divisors, whose sum is σ = 1030400994. Its totient is φ = 1030400992.

The previous prime is 1030400983. The next prime is 1030401013. The reversal of 1030400993 is 3990040301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012321489 + 18079504 = 31817^2 + 4252^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030400993 - 2⁶ = 1030400929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1030400953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515200496 + 515200497.

It is an arithmetic number, because the mean of its divisors is an integer number (515200497).

Almost surely, 2^1030400993 is an apocalyptic number.

It is an amenable number.

1030400993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030400993 is an equidigital number, since it uses as much as digits as its factorization.

1030400993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1030400993 is about 32099.8597037433. The cubic root of 1030400993 is about 1010.0326731906.

The spelling of 1030400993 in words is "one billion, thirty million, four hundred thousand, nine hundred ninety-three".