97940398 has 4 divisors (see below), whose sum is σ = 146910600. Its totient is φ = 48970198.

The previous prime is 97940393. The next prime is 97940419. The reversal of 97940398 is 89304979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89304979 = 239 ⋅373661.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97940393) by changing a digit.

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 as a sum of consecutive naturals, namely, 24485098 + ... + 24485101.

It is an arithmetic number, because the mean of its divisors is an integer number (36727650).

Almost surely, 2^97940398 is an apocalyptic number.

97940398 is a deficient number, since it is larger than the sum of its proper divisors (48970202).

97940398 is a wasteful number, since it uses less digits than its factorization.

97940398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48970201.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 97940398 is about 9896.4841231621. The cubic root of 97940398 is about 460.9501438485.

The spelling of 97940398 in words is "ninety-seven million, nine hundred forty thousand, three hundred ninety-eight".