403990416293 has 2 divisors, whose sum is σ = 403990416294. Its totient is φ = 403990416292.

The previous prime is 403990416259. The next prime is 403990416299. The reversal of 403990416293 is 392614099304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403907278369 + 83137924 = 635537^2 + 9118^2 .

It is a cyclic number.

It is not a de Polignac number, because 403990416293 - 2¹² = 403990412197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403990416299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201995208146 + 201995208147.

It is an arithmetic number, because the mean of its divisors is an integer number (201995208147).

Almost surely, 2^403990416293 is an apocalyptic number.

It is an amenable number.

403990416293 is a deficient number, since it is larger than the sum of its proper divisors (1).

403990416293 is an equidigital number, since it uses as much as digits as its factorization.

403990416293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 403990416293 in words is "four hundred three billion, nine hundred ninety million, four hundred sixteen thousand, two hundred ninety-three".