991652446 has 16 divisors (see below), whose sum is σ = 1577727360. Its totient is φ = 466142040.

The previous prime is 991652393. The next prime is 991652447. The reversal of 991652446 is 644256199.

It is a junction number, because it is equal to n+sod(n) for n = 991652396 and 991652405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991652447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94626 + ... + 104581.

It is an arithmetic number, because the mean of its divisors is an integer number (98607960).

Almost surely, 2^991652446 is an apocalyptic number.

991652446 is a deficient number, since it is larger than the sum of its proper divisors (586074914).

991652446 is a wasteful number, since it uses less digits than its factorization.

991652446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199359.

The product of its digits is 466560, while the sum is 46.

The square root of 991652446 is about 31490.5135874282. The cubic root of 991652446 is about 997.2097034869.

The spelling of 991652446 in words is "nine hundred ninety-one million, six hundred fifty-two thousand, four hundred forty-six".