9978037 has 2 divisors, whose sum is σ = 9978038. Its totient is φ = 9978036.

The previous prime is 9977999. The next prime is 9978041. The reversal of 9978037 is 7308799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6625476 + 3352561 = 2574^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 9978037 - 2⁷ = 9977909 is a prime.

It is a super-2 number, since 2×9978037² = 199122444746738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9977984 and 9978002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9978637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989018 + 4989019.

It is an arithmetic number, because the mean of its divisors is an integer number (4989019).

Almost surely, 2^9978037 is an apocalyptic number.

It is an amenable number.

9978037 is a deficient number, since it is larger than the sum of its proper divisors (1).

9978037 is an equidigital number, since it uses as much as digits as its factorization.

9978037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 9978037 is about 3158.8030961109. The cubic root of 9978037 is about 215.2856272271.

The spelling of 9978037 in words is "nine million, nine hundred seventy-eight thousand, thirty-seven".