97406405 has 4 divisors (see below), whose sum is σ = 116887692. Its totient is φ = 77925120.

The previous prime is 97406401. The next prime is 97406423. The reversal of 97406405 is 50460479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 80874049 = 4066^2 + 8993^2 .

It is not a de Polignac number, because 97406405 - 2² = 97406401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97406401) 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, 9740636 + ... + 9740645.

It is an arithmetic number, because the mean of its divisors is an integer number (29221923).

Almost surely, 2^97406405 is an apocalyptic number.

It is an amenable number.

97406405 is a deficient number, since it is larger than the sum of its proper divisors (19481287).

97406405 is a wasteful number, since it uses less digits than its factorization.

97406405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19481286.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 97406405 is about 9869.4683240791. The cubic root of 97406405 is about 460.1108822176.

The spelling of 97406405 in words is "ninety-seven million, four hundred six thousand, four hundred five".