1213406417 has 2 divisors, whose sum is σ = 1213406418. Its totient is φ = 1213406416.

The previous prime is 1213406413. The next prime is 1213406437. The reversal of 1213406417 is 7146043121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 801965761 + 411440656 = 28319^2 + 20284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213406417 - 2² = 1213406413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213406417.

It is not a weakly prime, because it can be changed into another prime (1213406413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606703208 + 606703209.

It is an arithmetic number, because the mean of its divisors is an integer number (606703209).

Almost surely, 2^1213406417 is an apocalyptic number.

It is an amenable number.

1213406417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213406417 is an equidigital number, since it uses as much as digits as its factorization.

1213406417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1213406417 is about 34833.9836510268. The cubic root of 1213406417 is about 1066.6012683320.

Adding to 1213406417 its reverse (7146043121), we get a palindrome (8359449538).

The spelling of 1213406417 in words is "one billion, two hundred thirteen million, four hundred six thousand, four hundred seventeen".