87430793 has 2 divisors, whose sum is σ = 87430794. Its totient is φ = 87430792.

The previous prime is 87430787. The next prime is 87430879. The reversal of 87430793 is 39703478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87086224 + 344569 = 9332^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 87430793 - 2⁸ = 87430537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87430793.

It is not a weakly prime, because it can be changed into another prime (87430193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43715396 + 43715397.

It is an arithmetic number, because the mean of its divisors is an integer number (43715397).

Almost surely, 2^87430793 is an apocalyptic number.

It is an amenable number.

87430793 is a deficient number, since it is larger than the sum of its proper divisors (1).

87430793 is an equidigital number, since it uses as much as digits as its factorization.

87430793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 87430793 is about 9350.4434654192. The cubic root of 87430793 is about 443.8349239567.

The spelling of 87430793 in words is "eighty-seven million, four hundred thirty thousand, seven hundred ninety-three".