139454446 has 8 divisors (see below), whose sum is σ = 216394920. Its totient is φ = 67322808.

The previous prime is 139454431. The next prime is 139454459. The reversal of 139454446 is 644454931.

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

It is a junction number, because it is equal to n+sod(n) for n = 139454399 and 139454408.

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, 1202136 + ... + 1202251.

It is an arithmetic number, because the mean of its divisors is an integer number (27049365).

Almost surely, 2^139454446 is an apocalyptic number.

139454446 is a deficient number, since it is larger than the sum of its proper divisors (76940474).

139454446 is a wasteful number, since it uses less digits than its factorization.

139454446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404418.

The product of its digits is 207360, while the sum is 40.

The square root of 139454446 is about 11809.0831989617. The cubic root of 139454446 is about 518.5740593452.

The spelling of 139454446 in words is "one hundred thirty-nine million, four hundred fifty-four thousand, four hundred forty-six".