730444381 has 4 divisors (see below), whose sum is σ = 737271072. Its totient is φ = 723617692.

The previous prime is 730444333. The next prime is 730444409. The reversal of 730444381 is 183444037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730444381 is a prime.

It is a super-2 number, since 2×730444381² = 1067097987468946322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730444301) 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, 3413185 + ... + 3413398.

It is an arithmetic number, because the mean of its divisors is an integer number (184317768).

Almost surely, 2^730444381 is an apocalyptic number.

It is an amenable number.

730444381 is a deficient number, since it is larger than the sum of its proper divisors (6826691).

730444381 is a wasteful number, since it uses less digits than its factorization.

730444381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826690.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 730444381 is about 27026.7345604311. The cubic root of 730444381 is about 900.5940033426.

The spelling of 730444381 in words is "seven hundred thirty million, four hundred forty-four thousand, three hundred eighty-one".