87402893 has 2 divisors, whose sum is σ = 87402894. Its totient is φ = 87402892.

The previous prime is 87402881. The next prime is 87402911. The reversal of 87402893 is 39820478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69272329 + 18130564 = 8323^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 87402893 - 2¹⁸ = 87140749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87402893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87402803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43701446 + 43701447.

It is an arithmetic number, because the mean of its divisors is an integer number (43701447).

Almost surely, 2^87402893 is an apocalyptic number.

It is an amenable number.

87402893 is a deficient number, since it is larger than the sum of its proper divisors (1).

87402893 is an equidigital number, since it uses as much as digits as its factorization.

87402893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 87402893 is about 9348.9514385304. The cubic root of 87402893 is about 443.7877082814.

The spelling of 87402893 in words is "eighty-seven million, four hundred two thousand, eight hundred ninety-three".