86641402 has 4 divisors (see below), whose sum is σ = 129962106. Its totient is φ = 43320700.

The previous prime is 86641397. The next prime is 86641409. The reversal of 86641402 is 20414668.

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., 78694641 + 7946761 = 8871^2 + 2819^2 .

It is not an unprimeable number, because it can be changed into a prime (86641409) by changing a digit.

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, 21660349 + ... + 21660352.

Almost surely, 2^86641402 is an apocalyptic number.

86641402 is a deficient number, since it is larger than the sum of its proper divisors (43320704).

86641402 is a wasteful number, since it uses less digits than its factorization.

86641402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43320703.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 86641402 is about 9308.1363333376. The cubic root of 86641402 is about 442.4951250168.

The spelling of 86641402 in words is "eighty-six million, six hundred forty-one thousand, four hundred two".