4247666040 has 64 divisors (see below), whose sum is σ = 12798727200. Its totient is φ = 1127757312.

The previous prime is 4247666039. The next prime is 4247666077. The reversal of 4247666040 is 406667424.

It is a self number, because there is not a number n which added to its sum of digits gives 4247666040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49807 + ... + 104766.

Almost surely, 2^4247666040 is an apocalyptic number.

4247666040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4247666040 is an abundant number, since it is smaller than the sum of its proper divisors (8551061160).

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

4247666040 is a wasteful number, since it uses less digits than its factorization.

4247666040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154816 (or 154812 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 4247666040 is about 65174.1209376851. The cubic root of 4247666040 is about 1619.5093316627.

The spelling of 4247666040 in words is "four billion, two hundred forty-seven million, six hundred sixty-six thousand, forty".