745973399 has 4 divisors (see below), whose sum is σ = 749760264. Its totient is φ = 742186536.

The previous prime is 745973387. The next prime is 745973401. The reversal of 745973399 is 993379547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745973399 is a prime.

It is a super-2 number, since 2×745973399² = 1112952624031226402, 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 (745973339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893137 + ... + 1893530.

It is an arithmetic number, because the mean of its divisors is an integer number (187440066).

Almost surely, 2^745973399 is an apocalyptic number.

745973399 is a deficient number, since it is larger than the sum of its proper divisors (3786865).

745973399 is a wasteful number, since it uses less digits than its factorization.

745973399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786864.

The product of its digits is 6429780, while the sum is 56.

The square root of 745973399 is about 27312.5135972506. The cubic root of 745973399 is about 906.9314179770.

The spelling of 745973399 in words is "seven hundred forty-five million, nine hundred seventy-three thousand, three hundred ninety-nine".