948139 has 2 divisors, whose sum is σ = 948140. Its totient is φ = 948138.

The previous prime is 948133. The next prime is 948149. The reversal of 948139 is 931849.

It is a weak prime.

It is an emirp because it is prime and its reverse (931849) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 948139 - 2⁹ = 947627 is a prime.

It is not a weakly prime, because it can be changed into another prime (948133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474069 + 474070.

It is an arithmetic number, because the mean of its divisors is an integer number (474070).

2⁹⁴⁸¹³⁹ is an apocalyptic number.

948139 is a deficient number, since it is larger than the sum of its proper divisors (1).

948139 is an equidigital number, since it uses as much as digits as its factorization.

948139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 948139 is about 973.7242936273. The cubic root of 948139 is about 98.2405240059.

Subtracting from 948139 its reverse (931849), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 948139 in words is "nine hundred forty-eight thousand, one hundred thirty-nine".