139827870 has 240 divisors, whose sum is σ = 472747968. Its totient is φ = 29393280.

The previous prime is 139827869. The next prime is 139827871. The reversal of 139827870 is 78728931.

139827870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139827869) and next prime (139827871).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139827871) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 515835 + ... + 516105.

Almost surely, 2^139827870 is an apocalyptic number.

139827870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139827870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236373984).

139827870 is an abundant number, since it is smaller than the sum of its proper divisors (332920098).

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

139827870 is a wasteful number, since it uses less digits than its factorization.

139827870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 139827870 is about 11824.8835089400. The cubic root of 139827870 is about 519.0365171940.

The spelling of 139827870 in words is "one hundred thirty-nine million, eight hundred twenty-seven thousand, eight hundred seventy".