403740013 has 2 divisors, whose sum is σ = 403740014. Its totient is φ = 403740012.

The previous prime is 403739989. The next prime is 403740023. The reversal of 403740013 is 310047304.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308423844 + 95316169 = 17562^2 + 9763^2 .

It is a cyclic number.

It is not a de Polignac number, because 403740013 - 2¹⁷ = 403608941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403740023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201870006 + 201870007.

It is an arithmetic number, because the mean of its divisors is an integer number (201870007).

Almost surely, 2^403740013 is an apocalyptic number.

It is an amenable number.

403740013 is a deficient number, since it is larger than the sum of its proper divisors (1).

403740013 is an equidigital number, since it uses as much as digits as its factorization.

403740013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 403740013 is about 20093.2827830596. The cubic root of 403740013 is about 739.0955671918.

Adding to 403740013 its reverse (310047304), we get a palindrome (713787317).

The spelling of 403740013 in words is "four hundred three million, seven hundred forty thousand, thirteen".