97947399078 has 24 divisors (see below), whose sum is σ = 212232251088. Its totient is φ = 32647150512.

The previous prime is 97947399007. The next prime is 97947399079. The reversal of 97947399078 is 87099374979.

It is a super-2 number, since 2×97947399078² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97947398997 and 97947399015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97947399079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156376 + ... + 469412.

It is an arithmetic number, because the mean of its divisors is an integer number (8843010462).

Almost surely, 2^97947399078 is an apocalyptic number.

97947399078 is an abundant number, since it is smaller than the sum of its proper divisors (114284852010).

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

97947399078 is a wasteful number, since it uses less digits than its factorization.

97947399078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330428 (or 330425 counting only the distinct ones).

The product of its (nonzero) digits is 216040608, while the sum is 72.

It can be divided in two parts, 97947 and 399078, that added together give a square (497025 = 705²).

The spelling of 97947399078 in words is "ninety-seven billion, nine hundred forty-seven million, three hundred ninety-nine thousand, seventy-eight".