46978439 has 2 divisors, whose sum is σ = 46978440. Its totient is φ = 46978438.

The previous prime is 46978411. The next prime is 46978471. The reversal of 46978439 is 93487964.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 46978439 - 2¹⁶ = 46912903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46978339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23489219 + 23489220.

It is an arithmetic number, because the mean of its divisors is an integer number (23489220).

Almost surely, 2^46978439 is an apocalyptic number.

46978439 is a deficient number, since it is larger than the sum of its proper divisors (1).

46978439 is an equidigital number, since it uses as much as digits as its factorization.

46978439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 46978439 is about 6854.0819224751. The cubic root of 46978439 is about 360.8274152476.

The spelling of 46978439 in words is "forty-six million, nine hundred seventy-eight thousand, four hundred thirty-nine".