70087399 has 2 divisors, whose sum is σ = 70087400. Its totient is φ = 70087398.

The previous prime is 70087397. The next prime is 70087421. The reversal of 70087399 is 99378007.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70087399 - 2¹ = 70087397 is a prime.

Together with 70087397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70087393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35043699 + 35043700.

It is an arithmetic number, because the mean of its divisors is an integer number (35043700).

Almost surely, 2^70087399 is an apocalyptic number.

70087399 is a deficient number, since it is larger than the sum of its proper divisors (1).

70087399 is an equidigital number, since it uses as much as digits as its factorization.

70087399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 70087399 is about 8371.8217252878. The cubic root of 70087399 is about 412.2999806519.

The spelling of 70087399 in words is "seventy million, eighty-seven thousand, three hundred ninety-nine".