729320401 has 2 divisors, whose sum is σ = 729320402. Its totient is φ = 729320400.

The previous prime is 729320387. The next prime is 729320407. The reversal of 729320401 is 104023927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374035600 + 355284801 = 19340^2 + 18849^2 .

It is a cyclic number.

It is not a de Polignac number, because 729320401 - 2¹³ = 729312209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 729320401.

It is not a weakly prime, because it can be changed into another prime (729320407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364660200 + 364660201.

It is an arithmetic number, because the mean of its divisors is an integer number (364660201).

Almost surely, 2^729320401 is an apocalyptic number.

It is an amenable number.

729320401 is a deficient number, since it is larger than the sum of its proper divisors (1).

729320401 is an equidigital number, since it uses as much as digits as its factorization.

729320401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 729320401 is about 27005.9327000569. The cubic root of 729320401 is about 900.1318329514.

The spelling of 729320401 in words is "seven hundred twenty-nine million, three hundred twenty thousand, four hundred one".