139706476 has 96 divisors (see below), whose sum is σ = 323108352. Its totient is φ = 51287040.

The previous prime is 139706473. The next prime is 139706507. The reversal of 139706476 is 674607931.

It is not an unprimeable number, because it can be changed into a prime (139706473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662011 + ... + 662221.

It is an arithmetic number, because the mean of its divisors is an integer number (3365712).

Almost surely, 2^139706476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139706476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161554176).

139706476 is an abundant number, since it is smaller than the sum of its proper divisors (183401876).

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

139706476 is a wasteful number, since it uses less digits than its factorization.

139706476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 139706476 is about 11819.7494051270. The cubic root of 139706476 is about 518.8862701758.

The spelling of 139706476 in words is "one hundred thirty-nine million, seven hundred six thousand, four hundred seventy-six".