747908249 has 16 divisors (see below), whose sum is σ = 841466880. Its totient is φ = 658938000.

The previous prime is 747908233. The next prime is 747908257. The reversal of 747908249 is 942809747.

It is a cyclic number.

It is not a de Polignac number, because 747908249 - 2⁴ = 747908233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 747908197 and 747908206.

It is not an unprimeable number, because it can be changed into a prime (747908209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37964 + ... + 54194.

It is an arithmetic number, because the mean of its divisors is an integer number (52591680).

Almost surely, 2^747908249 is an apocalyptic number.

It is an amenable number.

747908249 is a deficient number, since it is larger than the sum of its proper divisors (93558631).

747908249 is a wasteful number, since it uses less digits than its factorization.

747908249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 747908249 is about 27347.9112365095. The cubic root of 747908249 is about 907.7148513197.

The spelling of 747908249 in words is "seven hundred forty-seven million, nine hundred eight thousand, two hundred forty-nine".