139198792 has 8 divisors (see below), whose sum is σ = 260997750. Its totient is φ = 69599392.

The previous prime is 139198789. The next prime is 139198793. The reversal of 139198792 is 297891931.

It can be written as a sum of positive squares in only one way, i.e., 79816356 + 59382436 = 8934^2 + 7706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (139198793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8699917 + ... + 8699932.

Almost surely, 2^139198792 is an apocalyptic number.

It is an amenable number.

139198792 is a deficient number, since it is larger than the sum of its proper divisors (121798958).

139198792 is a wasteful number, since it uses less digits than its factorization.

139198792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17399855 (or 17399851 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The square root of 139198792 is about 11798.2537690965. The cubic root of 139198792 is about 518.2569746068.

The spelling of 139198792 in words is "one hundred thirty-nine million, one hundred ninety-eight thousand, seven hundred ninety-two".