212989463 has 2 divisors, whose sum is σ = 212989464. Its totient is φ = 212989462.

The previous prime is 212989433. The next prime is 212989493. The reversal of 212989463 is 364989212.

It is a balanced prime because it is at equal distance from previous prime (212989433) and next prime (212989493).

It is a cyclic number.

It is not a de Polignac number, because 212989463 - 2⁸ = 212989207 is a prime.

It is a super-2 number, since 2×212989463² = 90729022698056738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212989423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106494731 + 106494732.

It is an arithmetic number, because the mean of its divisors is an integer number (106494732).

Almost surely, 2^212989463 is an apocalyptic number.

212989463 is a deficient number, since it is larger than the sum of its proper divisors (1).

212989463 is an equidigital number, since it uses as much as digits as its factorization.

212989463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 212989463 is about 14594.1585231900. The cubic root of 212989463 is about 597.1994139423.

The spelling of 212989463 in words is "two hundred twelve million, nine hundred eighty-nine thousand, four hundred sixty-three".