974434991 has 2 divisors, whose sum is σ = 974434992. Its totient is φ = 974434990.

The previous prime is 974434957. The next prime is 974435029. The reversal of 974434991 is 199434479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 974434991 - 2⁶ = 974434927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974434921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487217495 + 487217496.

It is an arithmetic number, because the mean of its divisors is an integer number (487217496).

Almost surely, 2^974434991 is an apocalyptic number.

974434991 is a deficient number, since it is larger than the sum of its proper divisors (1).

974434991 is an equidigital number, since it uses as much as digits as its factorization.

974434991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The square root of 974434991 is about 31215.9412960750. The cubic root of 974434991 is about 991.4046621750.

The spelling of 974434991 in words is "nine hundred seventy-four million, four hundred thirty-four thousand, nine hundred ninety-one".