890997494 has 4 divisors (see below), whose sum is σ = 1336496244. Its totient is φ = 445498746.

The previous prime is 890997463. The next prime is 890997509. The reversal of 890997494 is 494799098.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 222749372 + ... + 222749375.

It is an arithmetic number, because the mean of its divisors is an integer number (334124061).

Almost surely, 2^890997494 is an apocalyptic number.

890997494 is a deficient number, since it is larger than the sum of its proper divisors (445498750).

890997494 is a wasteful number, since it uses less digits than its factorization.

890997494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445498749.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 890997494 is about 29849.5811360897. The cubic root of 890997494 is about 962.2593968564.

The spelling of 890997494 in words is "eight hundred ninety million, nine hundred ninety-seven thousand, four hundred ninety-four".