139780473 has 32 divisors (see below), whose sum is σ = 227328000. Its totient is φ = 74618496.

The previous prime is 139780441. The next prime is 139780481. The reversal of 139780473 is 374087931.

It is not a de Polignac number, because 139780473 - 2⁵ = 139780441 is a prime.

It is a super-3 number, since 3×139780473³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (139780073) 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, 26728 + ... + 31526.

It is an arithmetic number, because the mean of its divisors is an integer number (7104000).

Almost surely, 2^139780473 is an apocalyptic number.

It is an amenable number.

139780473 is a deficient number, since it is larger than the sum of its proper divisors (87547527).

139780473 is a wasteful number, since it uses less digits than its factorization.

139780473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 139780473 is about 11822.8792178555. The cubic root of 139780473 is about 518.9778651910.

The spelling of 139780473 in words is "one hundred thirty-nine million, seven hundred eighty thousand, four hundred seventy-three".