139973446 has 8 divisors (see below), whose sum is σ = 219088944. Its totient is φ = 66943800.

The previous prime is 139973419. The next prime is 139973453. The reversal of 139973446 is 644379931.

139973446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139973446² = 39185131170229832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 3042901 = 139973446 / (1 + 3 + 9 + 9 + 7 + 3 + 4 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 139973396 and 139973405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521405 + ... + 1521496.

It is an arithmetic number, because the mean of its divisors is an integer number (27386118).

Almost surely, 2^139973446 is an apocalyptic number.

139973446 is a deficient number, since it is larger than the sum of its proper divisors (79115498).

139973446 is a wasteful number, since it uses less digits than its factorization.

139973446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042926.

The product of its digits is 489888, while the sum is 46.

The square root of 139973446 is about 11831.0374016821. The cubic root of 139973446 is about 519.2165791835.

The spelling of 139973446 in words is "one hundred thirty-nine million, nine hundred seventy-three thousand, four hundred forty-six".