4001287798 has 4 divisors (see below), whose sum is σ = 6001931700. Its totient is φ = 2000643898.

The previous prime is 4001287727. The next prime is 4001287817. The reversal of 4001287798 is 8977821004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000321948 + ... + 1000321951.

It is an arithmetic number, because the mean of its divisors is an integer number (1500482925).

Almost surely, 2^4001287798 is an apocalyptic number.

4001287798 is a deficient number, since it is larger than the sum of its proper divisors (2000643902).

4001287798 is a wasteful number, since it uses less digits than its factorization.

4001287798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000643901.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 4001287798 is about 63255.7333211781. The cubic root of 4001287798 is about 1587.5713880146.

The spelling of 4001287798 in words is "four billion, one million, two hundred eighty-seven thousand, seven hundred ninety-eight".