974491487 has 2 divisors, whose sum is σ = 974491488. Its totient is φ = 974491486.

The previous prime is 974491481. The next prime is 974491489. The reversal of 974491487 is 784194479.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 974491487 - 2¹⁶ = 974425951 is a prime.

Together with 974491489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974491481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487245743 + 487245744.

It is an arithmetic number, because the mean of its divisors is an integer number (487245744).

Almost surely, 2^974491487 is an apocalyptic number.

974491487 is a deficient number, since it is larger than the sum of its proper divisors (1).

974491487 is an equidigital number, since it uses as much as digits as its factorization.

974491487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 974491487 is about 31216.8462052143. The cubic root of 974491487 is about 991.4238217618.

The spelling of 974491487 in words is "nine hundred seventy-four million, four hundred ninety-one thousand, four hundred eighty-seven".