403213009 has 2 divisors, whose sum is σ = 403213010. Its totient is φ = 403213008.

The previous prime is 403212973. The next prime is 403213037. The reversal of 403213009 is 900312304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252905409 + 150307600 = 15903^2 + 12260^2 .

It is a cyclic number.

It is not a de Polignac number, because 403213009 - 2¹¹ = 403210961 is a prime.

It is not a weakly prime, because it can be changed into another prime (403213409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201606504 + 201606505.

It is an arithmetic number, because the mean of its divisors is an integer number (201606505).

Almost surely, 2^403213009 is an apocalyptic number.

It is an amenable number.

403213009 is a deficient number, since it is larger than the sum of its proper divisors (1).

403213009 is an equidigital number, since it uses as much as digits as its factorization.

403213009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 403213009 is about 20080.1645660587. The cubic root of 403213009 is about 738.7738453695.

The spelling of 403213009 in words is "four hundred three million, two hundred thirteen thousand, nine".