727499394 has 80 divisors (see below), whose sum is σ = 1785742200. Its totient is φ = 220340736.

The previous prime is 727499363. The next prime is 727499429. The reversal of 727499394 is 493994727.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 587432169 + 140067225 = 24237^2 + 11835^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 727499394.

It is an unprimeable number.

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 in 39 ways as a sum of consecutive naturals, for example, 75312 + ... + 84420.

Almost surely, 2^727499394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 727499394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (892871100).

727499394 is an abundant number, since it is smaller than the sum of its proper divisors (1058242806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

727499394 is a wasteful number, since it uses less digits than its factorization.

727499394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169 (or 9160 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 727499394 is about 26972.1966847344. The cubic root of 727499394 is about 899.3820424621.

The spelling of 727499394 in words is "seven hundred twenty-seven million, four hundred ninety-nine thousand, three hundred ninety-four".