97199139 has 4 divisors (see below), whose sum is σ = 129598856. Its totient is φ = 64799424.

The previous prime is 97199101. The next prime is 97199147. The reversal of 97199139 is 93199179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93199179 = 3 ⋅31066393.

It is not a de Polignac number, because 97199139 - 2²³ = 88810531 is a prime.

It is a super-3 number, since 3×97199139³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97199189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16199854 + ... + 16199859.

It is an arithmetic number, because the mean of its divisors is an integer number (32399714).

Almost surely, 2^97199139 is an apocalyptic number.

97199139 is a deficient number, since it is larger than the sum of its proper divisors (32399717).

97199139 is a wasteful number, since it uses less digits than its factorization.

97199139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32399716.

The product of its digits is 137781, while the sum is 48.

The square root of 97199139 is about 9858.9623693368. The cubic root of 97199139 is about 459.7843018345.

The spelling of 97199139 in words is "ninety-seven million, one hundred ninety-nine thousand, one hundred thirty-nine".