97749983 has 4 divisors (see below), whose sum is σ = 103500000. Its totient is φ = 91999968.

The previous prime is 97749947. The next prime is 97749991. The reversal of 97749983 is 38994779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38994779 = 331 ⋅117809.

It is a cyclic number.

It is not a de Polignac number, because 97749983 - 2⁶ = 97749919 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 (97749083) 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, 2874983 + ... + 2875016.

It is an arithmetic number, because the mean of its divisors is an integer number (25875000).

Almost surely, 2^97749983 is an apocalyptic number.

97749983 is a deficient number, since it is larger than the sum of its proper divisors (5750017).

97749983 is a wasteful number, since it uses less digits than its factorization.

97749983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750016.

The product of its digits is 3429216, while the sum is 56.

The square root of 97749983 is about 9886.8591069156. The cubic root of 97749983 is about 460.6512247551.

The spelling of 97749983 in words is "ninety-seven million, seven hundred forty-nine thousand, nine hundred eighty-three".