139384043 has 4 divisors (see below), whose sum is σ = 139415328. Its totient is φ = 139352760.

The previous prime is 139384033. The next prime is 139384061. The reversal of 139384043 is 340483931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139384043 - 2⁸ = 139383787 is a prime.

It is a super-2 number, since 2×139384043² = 38855822886051698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139383994 and 139384012.

It is not an unprimeable number, because it can be changed into a prime (139384013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7571 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (34853832).

Almost surely, 2^139384043 is an apocalyptic number.

139384043 is a deficient number, since it is larger than the sum of its proper divisors (31285).

139384043 is an equidigital number, since it uses as much as digits as its factorization.

139384043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31284.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 139384043 is about 11806.1019392516. The cubic root of 139384043 is about 518.4867779997.

The spelling of 139384043 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, forty-three".