139204474 has 8 divisors (see below), whose sum is σ = 210654900. Its totient is φ = 68986176.

The previous prime is 139204463. The next prime is 139204511. The reversal of 139204474 is 474402931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 101909025 + 37295449 = 10095^2 + 6107^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 307749 + ... + 308200.

Almost surely, 2^139204474 is an apocalyptic number.

139204474 is a deficient number, since it is larger than the sum of its proper divisors (71450426).

139204474 is a wasteful number, since it uses less digits than its factorization.

139204474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616064.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 139204474 is about 11798.4945649858. The cubic root of 139204474 is about 518.2640261432.

The spelling of 139204474 in words is "one hundred thirty-nine million, two hundred four thousand, four hundred seventy-four".