4309809540 has 24 divisors (see below), whose sum is σ = 12067466880. Its totient is φ = 1149282528.

The previous prime is 4309809443. The next prime is 4309809557. The reversal of 4309809540 is 459089034.

It is a junction number, because it is equal to n+sod(n) for n = 4309809492 and 4309809501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35915020 + ... + 35915139.

It is an arithmetic number, because the mean of its divisors is an integer number (502811120).

Almost surely, 2^4309809540 is an apocalyptic number.

It is an amenable number.

4309809540 is an abundant number, since it is smaller than the sum of its proper divisors (7757657340).

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

4309809540 is a wasteful number, since it uses less digits than its factorization.

4309809540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71830171 (or 71830169 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 4309809540 is about 65649.1396744847. The cubic root of 4309809540 is about 1627.3689522397.

The spelling of 4309809540 in words is "four billion, three hundred nine million, eight hundred nine thousand, five hundred forty".