139463830 has 32 divisors (see below), whose sum is σ = 276589728. Its totient is φ = 50208000.

The previous prime is 139463827. The next prime is 139463867. The reversal of 139463830 is 38364931.

It is a self number, because there is not a number n which added to its sum of digits gives 139463830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4834 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (8643429).

Almost surely, 2^139463830 is an apocalyptic number.

139463830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139463830 is a deficient number, since it is larger than the sum of its proper divisors (137125898).

139463830 is a wasteful number, since it uses less digits than its factorization.

139463830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 139463830 is about 11809.4805135535. The cubic root of 139463830 is about 518.5856908372.

The spelling of 139463830 in words is "one hundred thirty-nine million, four hundred sixty-three thousand, eight hundred thirty".