749533549 has 4 divisors (see below), whose sum is σ = 751006620. Its totient is φ = 748060480.

The previous prime is 749533541. The next prime is 749533571. The reversal of 749533549 is 945335947.

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

It can be written as a sum of positive squares in 2 ways, for example, as 379548324 + 369985225 = 19482^2 + 19235^2 .

It is a cyclic number.

It is not a de Polignac number, because 749533549 - 2³ = 749533541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749533541) 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, 735772 + ... + 736789.

It is an arithmetic number, because the mean of its divisors is an integer number (187751655).

Almost surely, 2^749533549 is an apocalyptic number.

It is an amenable number.

749533549 is a deficient number, since it is larger than the sum of its proper divisors (1473071).

749533549 is a wasteful number, since it uses less digits than its factorization.

749533549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473070.

The product of its digits is 2041200, while the sum is 49.

The square root of 749533549 is about 27377.6103595621. The cubic root of 749533549 is about 908.3719023060.

The spelling of 749533549 in words is "seven hundred forty-nine million, five hundred thirty-three thousand, five hundred forty-nine".