139051008 has 180 divisors, whose sum is σ = 429378768. Its totient is φ = 43253760.

The previous prime is 139050997. The next prime is 139051009. The reversal of 139051008 is 800150931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139051009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3391468 + ... + 3391508.

Almost surely, 2^139051008 is an apocalyptic number.

139051008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139051008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214689384).

139051008 is an abundant number, since it is smaller than the sum of its proper divisors (290327760).

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

139051008 is an equidigital number, since it uses as much as digits as its factorization.

139051008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 139051008 is about 11791.9891451782. The cubic root of 139051008 is about 518.0735026857.

The spelling of 139051008 in words is "one hundred thirty-nine million, fifty-one thousand, eight".