87402097 has 4 divisors (see below), whose sum is σ = 88599460. Its totient is φ = 86204736.

The previous prime is 87402089. The next prime is 87402127. The reversal of 87402097 is 79020478.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79020478 = 2 ⋅39510239.

It can be written as a sum of positive squares in 2 ways, for example, as 16573041 + 70829056 = 4071^2 + 8416^2 .

It is a cyclic number.

It is not a de Polignac number, because 87402097 - 2³ = 87402089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87402017) 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, 598572 + ... + 598717.

It is an arithmetic number, because the mean of its divisors is an integer number (22149865).

Almost surely, 2^87402097 is an apocalyptic number.

It is an amenable number.

87402097 is a deficient number, since it is larger than the sum of its proper divisors (1197363).

87402097 is a wasteful number, since it uses less digits than its factorization.

87402097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197362.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87402097 is about 9348.9088668144. The cubic root of 87402097 is about 443.7863610488.

The spelling of 87402097 in words is "eighty-seven million, four hundred two thousand, ninety-seven".