139973606 has 8 divisors (see below), whose sum is σ = 213519240. Its totient is φ = 68800528.

The previous prime is 139973591. The next prime is 139973621. The reversal of 139973606 is 606379931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139973591) and next prime (139973621).

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

It is a super-2 number, since 2×139973606² = 39185220753286472, which contains 22 as substring.

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, 592991 + ... + 593226.

It is an arithmetic number, because the mean of its divisors is an integer number (26689905).

Almost surely, 2^139973606 is an apocalyptic number.

139973606 is a deficient number, since it is larger than the sum of its proper divisors (73545634).

139973606 is a wasteful number, since it uses less digits than its factorization.

139973606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186278.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 139973606 is about 11831.0441635555. The cubic root of 139973606 is about 519.2167770178.

The spelling of 139973606 in words is "one hundred thirty-nine million, nine hundred seventy-three thousand, six hundred six".