729451445 has 8 divisors (see below), whose sum is σ = 888406944. Its totient is φ = 574851024.

The previous prime is 729451409. The next prime is 729451451. The reversal of 729451445 is 544154927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 729451445 - 2²⁶ = 662342581 is a prime.

It is a super-2 number, since 2×729451445² = 1064198821225176050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088399 + ... + 1089068.

It is an arithmetic number, because the mean of its divisors is an integer number (111050868).

Almost surely, 2^729451445 is an apocalyptic number.

It is an amenable number.

729451445 is a deficient number, since it is larger than the sum of its proper divisors (158955499).

729451445 is a wasteful number, since it uses less digits than its factorization.

729451445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177539.

The product of its digits is 201600, while the sum is 41.

The square root of 729451445 is about 27008.3587987127. The cubic root of 729451445 is about 900.1857414995.

The spelling of 729451445 in words is "seven hundred twenty-nine million, four hundred fifty-one thousand, four hundred forty-five".