321413749 has 2 divisors, whose sum is σ = 321413750. Its totient is φ = 321413748.

The previous prime is 321413737. The next prime is 321413761. The reversal of 321413749 is 947314123.

It is a balanced prime because it is at equal distance from previous prime (321413737) and next prime (321413761).

It can be written as a sum of positive squares in only one way, i.e., 232715025 + 88698724 = 15255^2 + 9418^2 .

It is a cyclic number.

It is not a de Polignac number, because 321413749 - 2⁵ = 321413717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321413779) 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, 160706874 + 160706875.

It is an arithmetic number, because the mean of its divisors is an integer number (160706875).

Almost surely, 2^321413749 is an apocalyptic number.

It is an amenable number.

321413749 is a deficient number, since it is larger than the sum of its proper divisors (1).

321413749 is an equidigital number, since it uses as much as digits as its factorization.

321413749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 321413749 is about 17928.0157574674. The cubic root of 321413749 is about 684.9961809154.

The spelling of 321413749 in words is "three hundred twenty-one million, four hundred thirteen thousand, seven hundred forty-nine".