994405723 has 2 divisors, whose sum is σ = 994405724. Its totient is φ = 994405722.

The previous prime is 994405661. The next prime is 994405729. The reversal of 994405723 is 327504499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 994405723 - 2¹³ = 994397531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994405723.

It is not a weakly prime, because it can be changed into another prime (994405729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497202861 + 497202862.

It is an arithmetic number, because the mean of its divisors is an integer number (497202862).

Almost surely, 2^994405723 is an apocalyptic number.

994405723 is a deficient number, since it is larger than the sum of its proper divisors (1).

994405723 is an equidigital number, since it uses as much as digits as its factorization.

994405723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 994405723 is about 31534.1992604854. The cubic root of 994405723 is about 998.1317528261.

The spelling of 994405723 in words is "nine hundred ninety-four million, four hundred five thousand, seven hundred twenty-three".