91640342 has 8 divisors (see below), whose sum is σ = 141175776. Its totient is φ = 44581752.

The previous prime is 91640327. The next prime is 91640347. The reversal of 91640342 is 24304619.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91640347) 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 in 3 ways as a sum of consecutive naturals, for example, 619118 + ... + 619265.

It is an arithmetic number, because the mean of its divisors is an integer number (17646972).

Almost surely, 2^91640342 is an apocalyptic number.

91640342 is a deficient number, since it is larger than the sum of its proper divisors (49535434).

91640342 is a wasteful number, since it uses less digits than its factorization.

91640342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238422.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 91640342 is about 9572.8962179687. The cubic root of 91640342 is about 450.8467054557.

The spelling of 91640342 in words is "ninety-one million, six hundred forty thousand, three hundred forty-two".