1047639243 has 8 divisors (see below), whose sum is σ = 1596402688. Its totient is φ = 598650984.

The previous prime is 1047639227. The next prime is 1047639253. The reversal of 1047639243 is 3429367401.

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

It is not a de Polignac number, because 1047639243 - 2⁴ = 1047639227 is a prime.

It is a super-2 number, since 2×1047639243² = 2195095966947226098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047639253) 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, 24943771 + ... + 24943812.

It is an arithmetic number, because the mean of its divisors is an integer number (199550336).

Almost surely, 2^1047639243 is an apocalyptic number.

1047639243 is a deficient number, since it is larger than the sum of its proper divisors (548763445).

1047639243 is an equidigital number, since it uses as much as digits as its factorization.

1047639243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49887593.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 1047639243 is about 32367.2557224118. The cubic root of 1047639243 is about 1015.6340503594.

The spelling of 1047639243 in words is "one billion, forty-seven million, six hundred thirty-nine thousand, two hundred forty-three".