1047749221 has 8 divisors (see below), whose sum is σ = 1061786880. Its totient is φ = 1033795392.

The previous prime is 1047749189. The next prime is 1047749251. The reversal of 1047749221 is 1229477401.

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 1047749221 - 2⁵ = 1047749189 is a prime.

It is a super-2 number, since 2×1047749221² = 2195556860212213682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047749251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4410 + ... + 45988.

It is an arithmetic number, because the mean of its divisors is an integer number (132723360).

Almost surely, 2^1047749221 is an apocalyptic number.

It is an amenable number.

1047749221 is a deficient number, since it is larger than the sum of its proper divisors (14037659).

1047749221 is a wasteful number, since it uses less digits than its factorization.

1047749221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41915.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1047749221 is about 32368.9545861463. The cubic root of 1047749221 is about 1015.6695885131.

The spelling of 1047749221 in words is "one billion, forty-seven million, seven hundred forty-nine thousand, two hundred twenty-one".