974990894247 has 16 divisors (see below), whose sum is σ = 1444698311680. Its totient is φ = 649873618776.

The previous prime is 974990894243. The next prime is 974990894279. The reversal of 974990894247 is 742498099479.

974990894247 is a `hidden beast` number, since 9 + 7 + 499 + 0 + 8 + 94 + 2 + 47 = 666.

974990894247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 974990894247 - 2² = 974990894243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974990894243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3193273 + ... + 3485250.

It is an arithmetic number, because the mean of its divisors is an integer number (90293644480).

Almost surely, 2^974990894247 is an apocalyptic number.

974990894247 is a deficient number, since it is larger than the sum of its proper divisors (469707417433).

974990894247 is a wasteful number, since it uses less digits than its factorization.

974990894247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683939 (or 6683933 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 974990894247 in words is "nine hundred seventy-four billion, nine hundred ninety million, eight hundred ninety-four thousand, two hundred forty-seven".