85871402 has 4 divisors (see below), whose sum is σ = 128807106. Its totient is φ = 42935700.

The previous prime is 85871389. The next prime is 85871411. The reversal of 85871402 is 20417858.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85026841 + 844561 = 9221^2 + 919^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467849 + ... + 21467852.

Almost surely, 2^85871402 is an apocalyptic number.

85871402 is a deficient number, since it is larger than the sum of its proper divisors (42935704).

85871402 is a wasteful number, since it uses less digits than its factorization.

85871402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42935703.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 85871402 is about 9266.6823620970. The cubic root of 85871402 is about 441.1803740050.

The spelling of 85871402 in words is "eighty-five million, eight hundred seventy-one thousand, four hundred two".