86742494 has 4 divisors (see below), whose sum is σ = 130113744. Its totient is φ = 43371246.

The previous prime is 86742473. The next prime is 86742497. The reversal of 86742494 is 49424768.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86742497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21685622 + ... + 21685625.

It is an arithmetic number, because the mean of its divisors is an integer number (32528436).

Almost surely, 2^86742494 is an apocalyptic number.

86742494 is a deficient number, since it is larger than the sum of its proper divisors (43371250).

86742494 is a wasteful number, since it uses less digits than its factorization.

86742494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43371249.

The product of its digits is 387072, while the sum is 44.

The square root of 86742494 is about 9313.5650531899. The cubic root of 86742494 is about 442.6671572076.

The spelling of 86742494 in words is "eighty-six million, seven hundred forty-two thousand, four hundred ninety-four".