34978739 has 2 divisors, whose sum is σ = 34978740. Its totient is φ = 34978738.

The previous prime is 34978711. The next prime is 34978747. The reversal of 34978739 is 93787943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 34978739 - 2⁸ = 34978483 is a prime.

It is not a weakly prime, because it can be changed into another prime (34974739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17489369 + 17489370.

It is an arithmetic number, because the mean of its divisors is an integer number (17489370).

Almost surely, 2^34978739 is an apocalyptic number.

34978739 is a deficient number, since it is larger than the sum of its proper divisors (1).

34978739 is an equidigital number, since it uses as much as digits as its factorization.

34978739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 34978739 is about 5914.2826276735. The cubic root of 34978739 is about 327.0403831830.

The spelling of 34978739 in words is "thirty-four million, nine hundred seventy-eight thousand, seven hundred thirty-nine".