139479570 has 168 divisors, whose sum is σ = 404772876. Its totient is φ = 34572096.

The previous prime is 139479559. The next prime is 139479583. The reversal of 139479570 is 75974931.

139479570 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 79 + 570 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 139216401 + 263169 = 11799^2 + 513^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 2631664 + ... + 2631716.

Almost surely, 2^139479570 is an apocalyptic number.

139479570 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 139479570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202386438).

139479570 is an abundant number, since it is smaller than the sum of its proper divisors (265293306).

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

139479570 is an equidigital number, since it uses as much as digits as its factorization.

139479570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 139479570 is about 11810.1469084851. The cubic root of 139479570 is about 518.6051994360.

The spelling of 139479570 in words is "one hundred thirty-nine million, four hundred seventy-nine thousand, five hundred seventy".