32906491 has 4 divisors (see below), whose sum is σ = 34337232. Its totient is φ = 31475752.

The previous prime is 32906479. The next prime is 32906521. The reversal of 32906491 is 19460923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19460923 = 103 ⋅188941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32906491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32906411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715336 + ... + 715381.

It is an arithmetic number, because the mean of its divisors is an integer number (8584308).

Almost surely, 2^32906491 is an apocalyptic number.

32906491 is a deficient number, since it is larger than the sum of its proper divisors (1430741).

32906491 is a wasteful number, since it uses less digits than its factorization.

32906491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430740.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 32906491 is about 5736.4179589706. The cubic root of 32906491 is about 320.4501834318.

The spelling of 32906491 in words is "thirty-two million, nine hundred six thousand, four hundred ninety-one".