138429896 has 32 divisors (see below), whose sum is σ = 298058400. Its totient is φ = 59610240.

The previous prime is 138429881. The next prime is 138429937. The reversal of 138429896 is 698924831.

It is a happy number.

138429896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138429896² = 38325672213141632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39725 + ... + 43068.

It is an arithmetic number, because the mean of its divisors is an integer number (9314325).

Almost surely, 2^138429896 is an apocalyptic number.

It is an amenable number.

138429896 is an abundant number, since it is smaller than the sum of its proper divisors (159628504).

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

138429896 is a wasteful number, since it uses less digits than its factorization.

138429896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82829 (or 82825 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 138429896 is about 11765.6234853917. The cubic root of 138429896 is about 517.3009756896.

It can be divided in two parts, 138 and 429896, that added together give a palindrome (430034).

The spelling of 138429896 in words is "one hundred thirty-eight million, four hundred twenty-nine thousand, eight hundred ninety-six".