97878407 has 8 divisors (see below), whose sum is σ = 107237520. Its totient is φ = 88596160.

The previous prime is 97878371. The next prime is 97878413. The reversal of 97878407 is 70487879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97878407 - 2¹² = 97874311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97878427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16532 + ... + 21657.

It is an arithmetic number, because the mean of its divisors is an integer number (13404690).

Almost surely, 2^97878407 is an apocalyptic number.

97878407 is a deficient number, since it is larger than the sum of its proper divisors (9359113).

97878407 is a wasteful number, since it uses less digits than its factorization.

97878407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38433.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 97878407 is about 9893.3516565419. The cubic root of 97878407 is about 460.8528711131.

The spelling of 97878407 in words is "ninety-seven million, eight hundred seventy-eight thousand, four hundred seven".