240978739 has 2 divisors, whose sum is σ = 240978740. Its totient is φ = 240978738.

The previous prime is 240978721. The next prime is 240978769. The reversal of 240978739 is 937879042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240978739 - 2⁵ = 240978707 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240978692 and 240978701.

It is not a weakly prime, because it can be changed into another prime (240978769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120489369 + 120489370.

It is an arithmetic number, because the mean of its divisors is an integer number (120489370).

Almost surely, 2^240978739 is an apocalyptic number.

240978739 is a deficient number, since it is larger than the sum of its proper divisors (1).

240978739 is an equidigital number, since it uses as much as digits as its factorization.

240978739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 240978739 is about 15523.4899104551. The cubic root of 240978739 is about 622.2901247832.

The spelling of 240978739 in words is "two hundred forty million, nine hundred seventy-eight thousand, seven hundred thirty-nine".