139402446 has 16 divisors (see below), whose sum is σ = 283376208. Its totient is φ = 45705600.

The previous prime is 139402357. The next prime is 139402451. The reversal of 139402446 is 644204931.

139402446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190075 + ... + 190806.

It is an arithmetic number, because the mean of its divisors is an integer number (17711013).

Almost surely, 2^139402446 is an apocalyptic number.

139402446 is an abundant number, since it is smaller than the sum of its proper divisors (143973762).

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

139402446 is a wasteful number, since it uses less digits than its factorization.

139402446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380947.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 139402446 is about 11806.8812986326. The cubic root of 139402446 is about 518.5095957534.

The spelling of 139402446 in words is "one hundred thirty-nine million, four hundred two thousand, four hundred forty-six".