1147039729 has 16 divisors (see below), whose sum is σ = 1281106944. Its totient is φ = 1018224000.

The previous prime is 1147039681. The next prime is 1147039757. The reversal of 1147039729 is 9279307411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1147039729 - 2¹³ = 1147031537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147039769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74032 + ... + 88174.

It is an arithmetic number, because the mean of its divisors is an integer number (80069184).

Almost surely, 2^1147039729 is an apocalyptic number.

It is an amenable number.

1147039729 is a deficient number, since it is larger than the sum of its proper divisors (134067215).

1147039729 is a wasteful number, since it uses less digits than its factorization.

1147039729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14328.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 1147039729 is about 33867.9749763696. The cubic root of 1147039729 is about 1046.7898111406.

The spelling of 1147039729 in words is "one billion, one hundred forty-seven million, thirty-nine thousand, seven hundred twenty-nine".