212913793 has 2 divisors, whose sum is σ = 212913794. Its totient is φ = 212913792.

The previous prime is 212913781. The next prime is 212913817. The reversal of 212913793 is 397319212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127757809 + 85155984 = 11303^2 + 9228^2 .

It is a cyclic number.

It is not a de Polignac number, because 212913793 - 2⁵ = 212913761 is a prime.

It is not a weakly prime, because it can be changed into another prime (212913703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106456896 + 106456897.

It is an arithmetic number, because the mean of its divisors is an integer number (106456897).

Almost surely, 2^212913793 is an apocalyptic number.

It is an amenable number.

212913793 is a deficient number, since it is larger than the sum of its proper divisors (1).

212913793 is an equidigital number, since it uses as much as digits as its factorization.

212913793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 212913793 is about 14591.5658172795. The cubic root of 212913793 is about 597.1286820671.

The spelling of 212913793 in words is "two hundred twelve million, nine hundred thirteen thousand, seven hundred ninety-three".