748909999 has 4 divisors (see below), whose sum is σ = 750578400. Its totient is φ = 747241600.

The previous prime is 748909979. The next prime is 748910003. The reversal of 748909999 is 999909847.

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

It is a cyclic number.

It is not a de Polignac number, because 748909999 - 2²⁷ = 614692271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 748909999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748909979) 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, 833527 + ... + 834424.

It is an arithmetic number, because the mean of its divisors is an integer number (187644600).

Almost surely, 2^748909999 is an apocalyptic number.

748909999 is a deficient number, since it is larger than the sum of its proper divisors (1668401).

748909999 is a wasteful number, since it uses less digits than its factorization.

748909999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668400.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The square root of 748909999 is about 27366.2200349263. The cubic root of 748909999 is about 908.1199356247.

The spelling of 748909999 in words is "seven hundred forty-eight million, nine hundred nine thousand, nine hundred ninety-nine".