139828663 has 4 divisors (see below), whose sum is σ = 150584728. Its totient is φ = 129072600.

The previous prime is 139828649. The next prime is 139828669. The reversal of 139828663 is 366828931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366828931 = 7 ⋅52404133.

It is a cyclic number.

It is not a de Polignac number, because 139828663 - 2²¹ = 137731511 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 (139828669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5378013 + ... + 5378038.

It is an arithmetic number, because the mean of its divisors is an integer number (37646182).

Almost surely, 2^139828663 is an apocalyptic number.

139828663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

139828663 is a deficient number, since it is larger than the sum of its proper divisors (10756065).

139828663 is a wasteful number, since it uses less digits than its factorization.

139828663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10756064.

The product of its digits is 373248, while the sum is 46.

The square root of 139828663 is about 11824.9170398781. The cubic root of 139828663 is about 519.0374983889.

The spelling of 139828663 in words is "one hundred thirty-nine million, eight hundred twenty-eight thousand, six hundred sixty-three".