749814221 has 8 divisors (see below), whose sum is σ = 809746560. Its totient is φ = 690203952.

The previous prime is 749814217. The next prime is 749814229. The reversal of 749814221 is 122418947.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 749814221 - 2² = 749814217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749814229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75665 + ... + 84998.

It is an arithmetic number, because the mean of its divisors is an integer number (101218320).

Almost surely, 2^749814221 is an apocalyptic number.

It is an amenable number.

749814221 is a deficient number, since it is larger than the sum of its proper divisors (59932339).

749814221 is a wasteful number, since it uses less digits than its factorization.

749814221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161035.

The product of its digits is 32256, while the sum is 38.

The square root of 749814221 is about 27382.7358202207. The cubic root of 749814221 is about 908.4852718107.

The spelling of 749814221 in words is "seven hundred forty-nine million, eight hundred fourteen thousand, two hundred twenty-one".