890749947 has 8 divisors (see below), whose sum is σ = 1196211520. Its totient is φ = 589560840.

The previous prime is 890749931. The next prime is 890749949. The reversal of 890749947 is 749947098.

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

It is not a de Polignac number, because 890749947 - 2⁴ = 890749931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890749949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067629 + ... + 1068462.

It is an arithmetic number, because the mean of its divisors is an integer number (149526440).

Almost surely, 2^890749947 is an apocalyptic number.

890749947 is a deficient number, since it is larger than the sum of its proper divisors (305461573).

890749947 is a wasteful number, since it uses less digits than its factorization.

890749947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136233.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 890749947 is about 29845.4342739388. The cubic root of 890749947 is about 962.1702733395.

The spelling of 890749947 in words is "eight hundred ninety million, seven hundred forty-nine thousand, nine hundred forty-seven".