139672490905 has 8 divisors (see below), whose sum is σ = 167613972552. Its totient is φ = 111733337088.

The previous prime is 139672490899. The next prime is 139672490917. The reversal of 139672490905 is 509094276931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2212479369 + 137460011536 = 47037^2 + 370756^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 139672490905 - 2⁵ = 139672490873 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 447112 + ... + 692281.

It is an arithmetic number, because the mean of its divisors is an integer number (20951746569).

Almost surely, 2^139672490905 is an apocalyptic number.

It is an amenable number.

139672490905 is a deficient number, since it is larger than the sum of its proper divisors (27941481647).

139672490905 is a wasteful number, since it uses less digits than its factorization.

139672490905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163915.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 139672490905 in words is "one hundred thirty-nine billion, six hundred seventy-two million, four hundred ninety thousand, nine hundred five".