745921499 has 4 divisors (see below), whose sum is σ = 771642960. Its totient is φ = 720200040.

The previous prime is 745921489. The next prime is 745921507. The reversal of 745921499 is 994129547.

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-745921499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745921439) 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, 12860687 + ... + 12860744.

It is an arithmetic number, because the mean of its divisors is an integer number (192910740).

Almost surely, 2^745921499 is an apocalyptic number.

745921499 is a deficient number, since it is larger than the sum of its proper divisors (25721461).

745921499 is a wasteful number, since it uses less digits than its factorization.

745921499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25721460.

The product of its digits is 816480, while the sum is 50.

The square root of 745921499 is about 27311.5634667809. The cubic root of 745921499 is about 906.9103846836.

The spelling of 745921499 in words is "seven hundred forty-five million, nine hundred twenty-one thousand, four hundred ninety-nine".