1139459280 has 40 divisors (see below), whose sum is σ = 3532324512. Its totient is φ = 303855744.

The previous prime is 1139459273. The next prime is 1139459287. The reversal of 1139459280 is 829549311.

It is an interprime number because it is at equal distance from previous prime (1139459273) and next prime (1139459287).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139459287) 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, 2373634 + ... + 2374113.

Almost surely, 2^1139459280 is an apocalyptic number.

1139459280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1139459280 is an abundant number, since it is smaller than the sum of its proper divisors (2392865232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139459280 is a wasteful number, since it uses less digits than its factorization.

1139459280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747763 (or 4747757 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1139459280 is about 33755.8777104077. The cubic root of 1139459280 is about 1044.4787369992.

The spelling of 1139459280 in words is "one billion, one hundred thirty-nine million, four hundred fifty-nine thousand, two hundred eighty".