1099139958 has 48 divisors (see below), whose sum is σ = 2762323200. Its totient is φ = 309350448.

The previous prime is 1099139953. The next prime is 1099139959. The reversal of 1099139958 is 8599319901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099139953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56658 + ... + 73541.

It is an arithmetic number, because the mean of its divisors is an integer number (57548400).

Almost surely, 2^1099139958 is an apocalyptic number.

1099139958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1099139958 is an abundant number, since it is smaller than the sum of its proper divisors (1663183242).

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

1099139958 is a wasteful number, since it uses less digits than its factorization.

1099139958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130281 (or 130278 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 54.

The square root of 1099139958 is about 33153.2797472588. The cubic root of 1099139958 is about 1032.0110137188.

The spelling of 1099139958 in words is "one billion, ninety-nine million, one hundred thirty-nine thousand, nine hundred fifty-eight".