46978961 has 2 divisors, whose sum is σ = 46978962. Its totient is φ = 46978960.

The previous prime is 46978909. The next prime is 46979029. The reversal of 46978961 is 16987964.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43296400 + 3682561 = 6580^2 + 1919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46978961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (46978861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23489480 + 23489481.

It is an arithmetic number, because the mean of its divisors is an integer number (23489481).

Almost surely, 2^46978961 is an apocalyptic number.

It is an amenable number.

46978961 is a deficient number, since it is larger than the sum of its proper divisors (1).

46978961 is an equidigital number, since it uses as much as digits as its factorization.

46978961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 46978961 is about 6854.1200018675. The cubic root of 46978961 is about 360.8287516849.

The spelling of 46978961 in words is "forty-six million, nine hundred seventy-eight thousand, nine hundred sixty-one".