139767474 has 64 divisors (see below), whose sum is σ = 350069760. Its totient is φ = 36141120.

The previous prime is 139767473. The next prime is 139767491. The reversal of 139767474 is 474767931.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139767473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130212 + ... + 131280.

It is an arithmetic number, because the mean of its divisors is an integer number (5469840).

Almost surely, 2^139767474 is an apocalyptic number.

139767474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139767474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175034880).

139767474 is an abundant number, since it is smaller than the sum of its proper divisors (210302286).

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

139767474 is a wasteful number, since it uses less digits than its factorization.

139767474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375.

The product of its digits is 889056, while the sum is 48.

The square root of 139767474 is about 11822.3294658878. The cubic root of 139767474 is about 518.9617771012.

The spelling of 139767474 in words is "one hundred thirty-nine million, seven hundred sixty-seven thousand, four hundred seventy-four".