799990071 has 16 divisors (see below), whose sum is σ = 1114262784. Its totient is φ = 509573504.

The previous prime is 799990069. The next prime is 799990091. The reversal of 799990071 is 170099997.

It is a cyclic number.

It is not a de Polignac number, because 799990071 - 2¹ = 799990069 is a prime.

It is a super-2 number, since 2×799990071² = 1279968227397170082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 799989996 and 799990023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799990021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61480 + ... + 73346.

It is an arithmetic number, because the mean of its divisors is an integer number (69641424).

Almost surely, 2^799990071 is an apocalyptic number.

799990071 is a deficient number, since it is larger than the sum of its proper divisors (314272713).

799990071 is a wasteful number, since it uses less digits than its factorization.

799990071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870.

The product of its (nonzero) digits is 321489, while the sum is 51.

The square root of 799990071 is about 28284.0957253365. The cubic root of 799990071 is about 928.3139261787.

The spelling of 799990071 in words is "seven hundred ninety-nine million, nine hundred ninety thousand, seventy-one".