990497448 has 48 divisors (see below), whose sum is σ = 2722649280. Its totient is φ = 325236384.

The previous prime is 990497447. The next prime is 990497449. The reversal of 990497448 is 844794099.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (990497447) and next prime (990497449).

It is a junction number, because it is equal to n+sod(n) for n = 990497394 and 990497403.

It is not an unprimeable number, because it can be changed into a prime (990497447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97840 + ... + 107487.

It is an arithmetic number, because the mean of its divisors is an integer number (56721860).

Almost surely, 2^990497448 is an apocalyptic number.

It is an amenable number.

990497448 is an abundant number, since it is smaller than the sum of its proper divisors (1732151832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990497448 is a wasteful number, since it uses less digits than its factorization.

990497448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205406 (or 205399 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 990497448 is about 31472.1694199812. The cubic root of 990497448 is about 996.8223961957.

The spelling of 990497448 in words is "nine hundred ninety million, four hundred ninety-seven thousand, four hundred forty-eight".