248326639 has 4 divisors (see below), whose sum is σ = 270901800. Its totient is φ = 225751480.

The previous prime is 248326619. The next prime is 248326649. The reversal of 248326639 is 936623842.

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 248326639 - 2²³ = 239938031 is a prime.

It is a super-2 number, since 2×248326639² = 123332239274072642, 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 = 248326595 and 248326604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248326609) 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, 11287564 + ... + 11287585.

It is an arithmetic number, because the mean of its divisors is an integer number (67725450).

Almost surely, 2^248326639 is an apocalyptic number.

248326639 is a deficient number, since it is larger than the sum of its proper divisors (22575161).

248326639 is a wasteful number, since it uses less digits than its factorization.

248326639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22575160.

The product of its digits is 373248, while the sum is 43.

The square root of 248326639 is about 15758.3831340655. The cubic root of 248326639 is about 628.5518421115.

The spelling of 248326639 in words is "two hundred forty-eight million, three hundred twenty-six thousand, six hundred thirty-nine".