91396642 has 8 divisors (see below), whose sum is σ = 137484396. Its totient is φ = 45568512.

The previous prime is 91396639. The next prime is 91396651. The reversal of 91396642 is 24669319.

It can be written as a sum of positive squares in 2 ways, for example, as 84474481 + 6922161 = 9191^2 + 2631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 91396595 and 91396604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64023 + ... + 65434.

Almost surely, 2^91396642 is an apocalyptic number.

91396642 is a deficient number, since it is larger than the sum of its proper divisors (46087754).

91396642 is a wasteful number, since it uses less digits than its factorization.

91396642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129812.

The product of its digits is 69984, while the sum is 40.

The square root of 91396642 is about 9560.1590990945. The cubic root of 91396642 is about 450.4467037467.

The spelling of 91396642 in words is "ninety-one million, three hundred ninety-six thousand, six hundred forty-two".