491406733 has 2 divisors, whose sum is σ = 491406734. Its totient is φ = 491406732.

The previous prime is 491406719. The next prime is 491406737. The reversal of 491406733 is 337604194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355963689 + 135443044 = 18867^2 + 11638^2 .

It is a cyclic number.

It is not a de Polignac number, because 491406733 - 2¹³ = 491398541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491406692 and 491406701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491406737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245703366 + 245703367.

It is an arithmetic number, because the mean of its divisors is an integer number (245703367).

Almost surely, 2^491406733 is an apocalyptic number.

It is an amenable number.

491406733 is a deficient number, since it is larger than the sum of its proper divisors (1).

491406733 is an equidigital number, since it uses as much as digits as its factorization.

491406733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 491406733 is about 22167.6957079440. The cubic root of 491406733 is about 789.1272383728.

The spelling of 491406733 in words is "four hundred ninety-one million, four hundred six thousand, seven hundred thirty-three".