139578093 has 8 divisors (see below), whose sum is σ = 206782400. Its totient is φ = 93052044.

The previous prime is 139578083. The next prime is 139578107. The reversal of 139578093 is 390875931.

It is a happy number.

139578093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139578093 - 2¹⁰ = 139577069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139578083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2584753 + ... + 2584806.

It is an arithmetic number, because the mean of its divisors is an integer number (25847800).

Almost surely, 2^139578093 is an apocalyptic number.

It is an amenable number.

139578093 is a deficient number, since it is larger than the sum of its proper divisors (67204307).

139578093 is an equidigital number, since it uses as much as digits as its factorization.

139578093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169568 (or 5169562 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 139578093 is about 11814.3172887814. The cubic root of 139578093 is about 518.7272782809.

The spelling of 139578093 in words is "one hundred thirty-nine million, five hundred seventy-eight thousand, ninety-three".