9772697940 has 24 divisors (see below), whose sum is σ = 27363554400. Its totient is φ = 2606052768.

The previous prime is 9772697939. The next prime is 9772697959. The reversal of 9772697940 is 497962779.

It is a happy number.

9772697940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 162878299 = 9772697940 / (9 + 7 + 7 + 2 + 6 + 9 + 7 + 9 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81439090 + ... + 81439209.

It is an arithmetic number, because the mean of its divisors is an integer number (1140148100).

Almost surely, 2^9772697940 is an apocalyptic number.

It is an amenable number.

9772697940 is an abundant number, since it is smaller than the sum of its proper divisors (17590856460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9772697940 is a wasteful number, since it uses less digits than its factorization.

9772697940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162878311 (or 162878309 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 60.

The square root of 9772697940 is about 98856.9569630787. The cubic root of 9772697940 is about 2137.9858432570.

The spelling of 9772697940 in words is "nine billion, seven hundred seventy-two million, six hundred ninety-seven thousand, nine hundred forty".