909961442 has 32 divisors (see below), whose sum is σ = 1510451712. Its totient is φ = 408489984.

The previous prime is 909961441. The next prime is 909961469. The reversal of 909961442 is 244169909.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 909961393 and 909961402.

It is not an unprimeable number, because it can be changed into a prime (909961441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285743 + ... + 288909.

It is an arithmetic number, because the mean of its divisors is an integer number (47201616).

Almost surely, 2^909961442 is an apocalyptic number.

909961442 is a deficient number, since it is larger than the sum of its proper divisors (600490270).

909961442 is a wasteful number, since it uses less digits than its factorization.

909961442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 909961442 is about 30165.5671585999. The cubic root of 909961442 is about 969.0384214426.

The spelling of 909961442 in words is "nine hundred nine million, nine hundred sixty-one thousand, four hundred forty-two".