1016404393 has 4 divisors (see below), whose sum is σ = 1043874820. Its totient is φ = 988933968.

The previous prime is 1016404379. The next prime is 1016404397. The reversal of 1016404393 is 3934046101.

1016404393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 890246569 + 126157824 = 29837^2 + 11232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016404393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016404397) 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, 13735158 + ... + 13735231.

It is an arithmetic number, because the mean of its divisors is an integer number (260968705).

Almost surely, 2^1016404393 is an apocalyptic number.

It is an amenable number.

1016404393 is a deficient number, since it is larger than the sum of its proper divisors (27470427).

1016404393 is an equidigital number, since it uses as much as digits as its factorization.

1016404393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27470426.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1016404393 is about 31881.0977383151. The cubic root of 1016404393 is about 1005.4385000980.

The spelling of 1016404393 in words is "one billion, sixteen million, four hundred four thousand, three hundred ninety-three".