1008999492 has 12 divisors (see below), whose sum is σ = 2354332176. Its totient is φ = 336333160.

The previous prime is 1008999461. The next prime is 1008999493. The reversal of 1008999492 is 2949998001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1008999493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42041634 + ... + 42041657.

It is an arithmetic number, because the mean of its divisors is an integer number (196194348).

Almost surely, 2^1008999492 is an apocalyptic number.

1008999492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1008999492 is an abundant number, since it is smaller than the sum of its proper divisors (1345332684).

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

1008999492 is a wasteful number, since it uses less digits than its factorization.

1008999492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84083298 (or 84083296 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 1008999492 is about 31764.7523522536. The cubic root of 1008999492 is about 1002.9908764068.

The spelling of 1008999492 in words is "one billion, eight million, nine hundred ninety-nine thousand, four hundred ninety-two".