930978247 has 2 divisors, whose sum is σ = 930978248. Its totient is φ = 930978246.

The previous prime is 930978229. The next prime is 930978263. The reversal of 930978247 is 742879039.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 930978247 - 2¹⁵ = 930945479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 930978247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (930978647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465489123 + 465489124.

It is an arithmetic number, because the mean of its divisors is an integer number (465489124).

Almost surely, 2^930978247 is an apocalyptic number.

930978247 is a deficient number, since it is larger than the sum of its proper divisors (1).

930978247 is an equidigital number, since it uses as much as digits as its factorization.

930978247 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 930978247 is about 30511.9361398126. The cubic root of 930978247 is about 976.4421339403.

It can be divided in two parts, 930978 and 247, that added together give a square (931225 = 965²).

The spelling of 930978247 in words is "nine hundred thirty million, nine hundred seventy-eight thousand, two hundred forty-seven".