87954193 has 2 divisors, whose sum is σ = 87954194. Its totient is φ = 87954192.

The previous prime is 87954179. The next prime is 87954197. The reversal of 87954193 is 39145978.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83594449 + 4359744 = 9143^2 + 2088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87954193 is a prime.

It is not a weakly prime, because it can be changed into another prime (87954197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43977096 + 43977097.

It is an arithmetic number, because the mean of its divisors is an integer number (43977097).

Almost surely, 2^87954193 is an apocalyptic number.

It is an amenable number.

87954193 is a deficient number, since it is larger than the sum of its proper divisors (1).

87954193 is an equidigital number, since it uses as much as digits as its factorization.

87954193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 87954193 is about 9378.3896805368. The cubic root of 87954193 is about 444.7188275552.

The spelling of 87954193 in words is "eighty-seven million, nine hundred fifty-four thousand, one hundred ninety-three".