139466814 has 16 divisors (see below), whose sum is σ = 279049728. Its totient is φ = 46469592.

The previous prime is 139466773. The next prime is 139466819. The reversal of 139466814 is 418664931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139466819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24069 + ... + 29295.

It is an arithmetic number, because the mean of its divisors is an integer number (17440608).

Almost surely, 2^139466814 is an apocalyptic number.

139466814 is an abundant number, since it is smaller than the sum of its proper divisors (139582914).

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

139466814 is a wasteful number, since it uses less digits than its factorization.

139466814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679.

The product of its digits is 124416, while the sum is 42.

The square root of 139466814 is about 11809.6068520506. The cubic root of 139466814 is about 518.5893894035.

The spelling of 139466814 in words is "one hundred thirty-nine million, four hundred sixty-six thousand, eight hundred fourteen".