978483887 has 2 divisors, whose sum is σ = 978483888. Its totient is φ = 978483886.

The previous prime is 978483853. The next prime is 978483937. The reversal of 978483887 is 788384879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978483887 - 2⁶ = 978483823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978483487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489241943 + 489241944.

It is an arithmetic number, because the mean of its divisors is an integer number (489241944).

Almost surely, 2^978483887 is an apocalyptic number.

978483887 is a deficient number, since it is larger than the sum of its proper divisors (1).

978483887 is an equidigital number, since it uses as much as digits as its factorization.

978483887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 62.

The square root of 978483887 is about 31280.7270855394. The cubic root of 978483887 is about 992.7759003876.

The spelling of 978483887 in words is "nine hundred seventy-eight million, four hundred eighty-three thousand, eight hundred eighty-seven".