418950991 has 2 divisors, whose sum is σ = 418950992. Its totient is φ = 418950990.

The previous prime is 418950971. The next prime is 418951103. The reversal of 418950991 is 199059814.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 418950991 - 2⁹ = 418950479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418950971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209475495 + 209475496.

It is an arithmetic number, because the mean of its divisors is an integer number (209475496).

Almost surely, 2^418950991 is an apocalyptic number.

418950991 is a deficient number, since it is larger than the sum of its proper divisors (1).

418950991 is an equidigital number, since it uses as much as digits as its factorization.

418950991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 418950991 is about 20468.2923322880. The cubic root of 418950991 is about 748.2632352278.

The spelling of 418950991 in words is "four hundred eighteen million, nine hundred fifty thousand, nine hundred ninety-one".