974017909 has 2 divisors, whose sum is σ = 974017910. Its totient is φ = 974017908.

The previous prime is 974017883. The next prime is 974017931. The reversal of 974017909 is 909710479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 754326225 + 219691684 = 27465^2 + 14822^2 .

It is a cyclic number.

It is not a de Polignac number, because 974017909 - 2¹⁵ = 973985141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974017949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487008954 + 487008955.

It is an arithmetic number, because the mean of its divisors is an integer number (487008955).

Almost surely, 2^974017909 is an apocalyptic number.

It is an amenable number.

974017909 is a deficient number, since it is larger than the sum of its proper divisors (1).

974017909 is an equidigital number, since it uses as much as digits as its factorization.

974017909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 974017909 is about 31209.2599880228. The cubic root of 974017909 is about 991.2631935111.

The spelling of 974017909 in words is "nine hundred seventy-four million, seventeen thousand, nine hundred nine".