4277639646 has 160 divisors (see below), whose sum is σ = 11285733888. Its totient is φ = 1185762240.

The previous prime is 4277639633. The next prime is 4277639669. The reversal of 4277639646 is 6469367724.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 4277639592 and 4277639601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6190161 + ... + 6190851.

Almost surely, 2^4277639646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4277639646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5642866944).

4277639646 is an abundant number, since it is smaller than the sum of its proper divisors (7008094242).

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

4277639646 is a wasteful number, since it uses less digits than its factorization.

4277639646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 859 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The square root of 4277639646 is about 65403.6669155484. Note that the first 3 decimals coincide. The cubic root of 4277639646 is about 1623.3097560010.

The spelling of 4277639646 in words is "four billion, two hundred seventy-seven million, six hundred thirty-nine thousand, six hundred forty-six".