139791383 has 4 divisors (see below), whose sum is σ = 139886880. Its totient is φ = 139695888.

The previous prime is 139791371. The next prime is 139791479. The reversal of 139791383 is 383197931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383197931 = 41 ⋅9346291.

It is a cyclic number.

It is not a de Polignac number, because 139791383 - 2⁶ = 139791319 is a prime.

It is a super-2 number, since 2×139791383² = 39083261522105378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139791343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45518 + ... + 48491.

It is an arithmetic number, because the mean of its divisors is an integer number (34971720).

Almost surely, 2^139791383 is an apocalyptic number.

139791383 is a deficient number, since it is larger than the sum of its proper divisors (95497).

139791383 is an equidigital number, since it uses as much as digits as its factorization.

139791383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95496.

The product of its digits is 122472, while the sum is 44.

The square root of 139791383 is about 11823.3406023848. The cubic root of 139791383 is about 518.9913670798.

The spelling of 139791383 in words is "one hundred thirty-nine million, seven hundred ninety-one thousand, three hundred eighty-three".