4990690847 has 4 divisors (see below), whose sum is σ = 5112415056. Its totient is φ = 4868966640.

The previous prime is 4990690843. The next prime is 4990690853. The reversal of 4990690847 is 7480960994.

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

It is a cyclic number.

It is not a de Polignac number, because 4990690847 - 2² = 4990690843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4990690792 and 4990690801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4990690843) 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, 60862043 + ... + 60862124.

It is an arithmetic number, because the mean of its divisors is an integer number (1278103764).

Almost surely, 2^4990690847 is an apocalyptic number.

4990690847 is a deficient number, since it is larger than the sum of its proper divisors (121724209).

4990690847 is a wasteful number, since it uses less digits than its factorization.

4990690847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121724208.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 4990690847 is about 70644.8217989118. The cubic root of 4990690847 is about 1708.9140588711.

The spelling of 4990690847 in words is "four billion, nine hundred ninety million, six hundred ninety thousand, eight hundred forty-seven".