98278669 has 2 divisors, whose sum is σ = 98278670. Its totient is φ = 98278668.

The previous prime is 98278667. The next prime is 98278727. The reversal of 98278669 is 96687289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69923044 + 28355625 = 8362^2 + 5325^2 .

It is a cyclic number.

It is not a de Polignac number, because 98278669 - 2¹ = 98278667 is a prime.

It is a super-2 number, since 2×98278669² = 19317393560823122, which contains 22 as substring.

Together with 98278667, 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 (98278667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49139334 + 49139335.

It is an arithmetic number, because the mean of its divisors is an integer number (49139335).

Almost surely, 2^98278669 is an apocalyptic number.

It is an amenable number.

98278669 is a deficient number, since it is larger than the sum of its proper divisors (1).

98278669 is an equidigital number, since it uses as much as digits as its factorization.

98278669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 98278669 is about 9913.5598550672. The cubic root of 98278669 is about 461.4802175740.

It can be divided in two parts, 9827 and 8669, that added together give a square (18496 = 136²).

The spelling of 98278669 in words is "ninety-eight million, two hundred seventy-eight thousand, six hundred sixty-nine".