4280639139 has 12 divisors (see below), whose sum is σ = 7066452016. Its totient is φ = 2446079472.

The previous prime is 4280639131. The next prime is 4280639147. The reversal of 4280639139 is 9319360824.

It is a happy number.

4280639139 is a `hidden beast` number, since 4 + 2 + 8 + 0 + 639 + 1 + 3 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (4280639131) and next prime (4280639147).

It is not a de Polignac number, because 4280639139 - 2³ = 4280639131 is a prime.

It is a super-2 number, since 2×4280639139² = 36647742876677322642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4280639094 and 4280639103.

It is not an unprimeable number, because it can be changed into a prime (4280639131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33973264 + ... + 33973389.

Almost surely, 2^4280639139 is an apocalyptic number.

4280639139 is a deficient number, since it is larger than the sum of its proper divisors (2785812877).

4280639139 is a wasteful number, since it uses less digits than its factorization.

4280639139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67946666 (or 67946663 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 4280639139 is about 65426.5935151755. The cubic root of 4280639139 is about 1623.6890904798.

The spelling of 4280639139 in words is "four billion, two hundred eighty million, six hundred thirty-nine thousand, one hundred thirty-nine".