139814863 has 8 divisors (see below), whose sum is σ = 149371520. Its totient is φ = 130478040.

The previous prime is 139814849. The next prime is 139814869. The reversal of 139814863 is 368418931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139814863 - 2⁹ = 139814351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139814869) 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, 53643 + ... + 56188.

It is an arithmetic number, because the mean of its divisors is an integer number (18671440).

Almost surely, 2^139814863 is an apocalyptic number.

139814863 is a deficient number, since it is larger than the sum of its proper divisors (9556657).

139814863 is a wasteful number, since it uses less digits than its factorization.

139814863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109917.

The product of its digits is 124416, while the sum is 43.

The square root of 139814863 is about 11824.3335118729. Note that the first 3 decimals coincide. The cubic root of 139814863 is about 519.0204228409.

It can be divided in two parts, 1398 and 14863, that added together give a palindrome (16261).

The spelling of 139814863 in words is "one hundred thirty-nine million, eight hundred fourteen thousand, eight hundred sixty-three".