1040449539 has 8 divisors (see below), whose sum is σ = 1393487872. Its totient is φ = 690522120.

The previous prime is 1040449523. The next prime is 1040449541. The reversal of 1040449539 is 9359440401.

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

It is not a de Polignac number, because 1040449539 - 2⁴ = 1040449523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040449497 and 1040449506.

It is not an unprimeable number, because it can be changed into a prime (1040449339) 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, 776947 + ... + 778284.

It is an arithmetic number, because the mean of its divisors is an integer number (174185984).

Almost surely, 2^1040449539 is an apocalyptic number.

1040449539 is a deficient number, since it is larger than the sum of its proper divisors (353038333).

1040449539 is a wasteful number, since it uses less digits than its factorization.

1040449539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555457.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1040449539 is about 32256.0000465030. Note that the first 4 decimals coincide. The cubic root of 1040449539 is about 1013.3053618515.

The spelling of 1040449539 in words is "one billion, forty million, four hundred forty-nine thousand, five hundred thirty-nine".