139093967 has 4 divisors (see below), whose sum is σ = 139144416. Its totient is φ = 139043520.

The previous prime is 139093963. The next prime is 139093979. The reversal of 139093967 is 769390931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769390931 = 233 ⋅3302107.

It is a cyclic number.

It is not a de Polignac number, because 139093967 - 2² = 139093963 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 (139093961) 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, 20834 + ... + 26687.

It is an arithmetic number, because the mean of its divisors is an integer number (34786104).

Almost surely, 2^139093967 is an apocalyptic number.

139093967 is a deficient number, since it is larger than the sum of its proper divisors (50449).

139093967 is an equidigital number, since it uses as much as digits as its factorization.

139093967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50448.

The product of its (nonzero) digits is 275562, while the sum is 47.

The square root of 139093967 is about 11793.8105377355. The cubic root of 139093967 is about 518.1268491240.

The spelling of 139093967 in words is "one hundred thirty-nine million, ninety-three thousand, nine hundred sixty-seven".