246939641 has 4 divisors (see below), whose sum is σ = 265935012. Its totient is φ = 227944272.

The previous prime is 246939619. The next prime is 246939643. The reversal of 246939641 is 146939642.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146939642 = 2 ⋅73469821.

It can be written as a sum of positive squares in 2 ways, for example, as 111915241 + 135024400 = 10579^2 + 11620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-246939641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 246939592 and 246939601.

It is not an unprimeable number, because it can be changed into a prime (246939643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9497666 + ... + 9497691.

It is an arithmetic number, because the mean of its divisors is an integer number (66483753).

Almost surely, 2^246939641 is an apocalyptic number.

It is an amenable number.

246939641 is a deficient number, since it is larger than the sum of its proper divisors (18995371).

246939641 is a wasteful number, since it uses less digits than its factorization.

246939641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18995370.

The product of its digits is 279936, while the sum is 44.

The square root of 246939641 is about 15714.3132525733. The cubic root of 246939641 is about 627.3794235077.

Subtracting from 246939641 its reverse (146939642), we obtain a palindrome (99999999).

The spelling of 246939641 in words is "two hundred forty-six million, nine hundred thirty-nine thousand, six hundred forty-one".