990468671 has 4 divisors (see below), whose sum is σ = 1048731552. Its totient is φ = 932205792.

The previous prime is 990468643. The next prime is 990468679. The reversal of 990468671 is 176864099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176864099 = 227 ⋅779137.

It is a cyclic number.

It is not a de Polignac number, because 990468671 - 2⁶ = 990468607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990468679) 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, 29131415 + ... + 29131448.

It is an arithmetic number, because the mean of its divisors is an integer number (262182888).

Almost surely, 2^990468671 is an apocalyptic number.

990468671 is a deficient number, since it is larger than the sum of its proper divisors (58262881).

990468671 is a wasteful number, since it uses less digits than its factorization.

990468671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58262880.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 990468671 is about 31471.7122349579. The cubic root of 990468671 is about 996.8127425158.

The spelling of 990468671 in words is "nine hundred ninety million, four hundred sixty-eight thousand, six hundred seventy-one".