729090485 has 4 divisors (see below), whose sum is σ = 874908588. Its totient is φ = 583272384.

The previous prime is 729090473. The next prime is 729090491. The reversal of 729090485 is 584090927.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137968516 + 591121969 = 11746^2 + 24313^2 .

It is a cyclic number.

It is not a de Polignac number, because 729090485 - 2⁴ = 729090469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72909044 + ... + 72909053.

It is an arithmetic number, because the mean of its divisors is an integer number (218727147).

Almost surely, 2^729090485 is an apocalyptic number.

It is an amenable number.

729090485 is a deficient number, since it is larger than the sum of its proper divisors (145818103).

729090485 is a wasteful number, since it uses less digits than its factorization.

729090485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145818102.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 729090485 is about 27001.6755961551. The cubic root of 729090485 is about 900.0372350850.

The spelling of 729090485 in words is "seven hundred twenty-nine million, ninety thousand, four hundred eighty-five".