973209487 has 2 divisors, whose sum is σ = 973209488. Its totient is φ = 973209486.

The previous prime is 973209427. The next prime is 973209533. The reversal of 973209487 is 784902379.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 973209487 - 2¹⁵ = 973176719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 973209487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973209427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486604743 + 486604744.

It is an arithmetic number, because the mean of its divisors is an integer number (486604744).

Almost surely, 2^973209487 is an apocalyptic number.

973209487 is a deficient number, since it is larger than the sum of its proper divisors (1).

973209487 is an equidigital number, since it uses as much as digits as its factorization.

973209487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 973209487 is about 31196.3056626903. The cubic root of 973209487 is about 990.9888724833.

The spelling of 973209487 in words is "nine hundred seventy-three million, two hundred nine thousand, four hundred eighty-seven".