974649789 has 6 divisors (see below), whose sum is σ = 1407827486. Its totient is φ = 649766520.

The previous prime is 974649787. The next prime is 974649799. The reversal of 974649789 is 987946479.

974649789 is a `hidden beast` number, since 9 + 7 + 464 + 97 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 654848100 + 319801689 = 25590^2 + 17883^2 .

It is not a de Polignac number, because 974649789 - 2¹ = 974649787 is a prime.

It is a super-2 number, since 2×974649789² = 1899884422395489042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974649787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54147202 + ... + 54147219.

Almost surely, 2^974649789 is an apocalyptic number.

It is an amenable number.

974649789 is a deficient number, since it is larger than the sum of its proper divisors (433177697).

974649789 is a wasteful number, since it uses less digits than its factorization.

974649789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108294427 (or 108294424 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 974649789 is about 31219.3816242411. The cubic root of 974649789 is about 991.4775030505.

The spelling of 974649789 in words is "nine hundred seventy-four million, six hundred forty-nine thousand, seven hundred eighty-nine".