730537393 has 4 divisors (see below), whose sum is σ = 731821860. Its totient is φ = 729252928.

The previous prime is 730537391. The next prime is 730537397. The reversal of 730537393 is 393735037.

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 139901584 + 590635809 = 11828^2 + 24303^2 .

It is a cyclic number.

It is not a de Polignac number, because 730537393 - 2¹ = 730537391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730537391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641380 + ... + 642517.

It is an arithmetic number, because the mean of its divisors is an integer number (182955465).

Almost surely, 2^730537393 is an apocalyptic number.

It is an amenable number.

730537393 is a deficient number, since it is larger than the sum of its proper divisors (1284467).

730537393 is a wasteful number, since it uses less digits than its factorization.

730537393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284466.

The product of its (nonzero) digits is 178605, while the sum is 40.

The square root of 730537393 is about 27028.4552462770. The cubic root of 730537393 is about 900.6322277880.

The spelling of 730537393 in words is "seven hundred thirty million, five hundred thirty-seven thousand, three hundred ninety-three".