4990987901 has 4 divisors (see below), whose sum is σ = 4996491552. Its totient is φ = 4985484252.

The previous prime is 4990987889. The next prime is 4990987907. The reversal of 4990987901 is 1097890994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4990987901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4990987907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750465 + ... + 2752278.

It is an arithmetic number, because the mean of its divisors is an integer number (1249122888).

Almost surely, 2^4990987901 is an apocalyptic number.

It is an amenable number.

4990987901 is a deficient number, since it is larger than the sum of its proper divisors (5503651).

4990987901 is an equidigital number, since it uses as much as digits as its factorization.

4990987901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503650.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 4990987901 is about 70646.9242147172. The cubic root of 4990987901 is about 1708.9479639757.

The spelling of 4990987901 in words is "four billion, nine hundred ninety million, nine hundred eighty-seven thousand, nine hundred one".