138964050 has 36 divisors (see below), whose sum is σ = 373351290. Its totient is φ = 37056960.

The previous prime is 138964031. The next prime is 138964051. The reversal of 138964050 is 50469831.

138964050 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 640 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 133888041 + 5076009 = 11571^2 + 2253^2 .

It is a super-2 number, since 2×138964050² = 38622014384805000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138963996 and 138964014.

It is not an unprimeable number, because it can be changed into a prime (138964051) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 153955 + ... + 154854.

Almost surely, 2^138964050 is an apocalyptic number.

138964050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138964050 is an abundant number, since it is smaller than the sum of its proper divisors (234387240).

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

138964050 is a wasteful number, since it uses less digits than its factorization.

138964050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308827 (or 308819 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 138964050 is about 11788.3014043585. The cubic root of 138964050 is about 517.9654846985.

The spelling of 138964050 in words is "one hundred thirty-eight million, nine hundred sixty-four thousand, fifty".