139488810 has 48 divisors (see below), whose sum is σ = 339153696. Its totient is φ = 36716416.

The previous prime is 139488781. The next prime is 139488821. The reversal of 139488810 is 18884931.

It is a super-2 number, since 2×139488810² = 38914256230432200, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 237337 + ... + 237923.

It is an arithmetic number, because the mean of its divisors is an integer number (7065702).

Almost surely, 2^139488810 is an apocalyptic number.

139488810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139488810 is an abundant number, since it is smaller than the sum of its proper divisors (199664886).

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

139488810 is an equidigital number, since it uses as much as digits as its factorization.

139488810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 139488810 is about 11810.5380910439. The cubic root of 139488810 is about 518.6166510683.

The spelling of 139488810 in words is "one hundred thirty-nine million, four hundred eighty-eight thousand, eight hundred ten".