616212449 has 2 divisors, whose sum is σ = 616212450. Its totient is φ = 616212448.

The previous prime is 616212431. The next prime is 616212469. The reversal of 616212449 is 944212616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451860049 + 164352400 = 21257^2 + 12820^2 .

It is a cyclic number.

It is not a de Polignac number, because 616212449 - 2¹⁶ = 616146913 is a prime.

It is equal to p_32126489 and since 616212449 and 32126489 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (616212469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308106224 + 308106225.

It is an arithmetic number, because the mean of its divisors is an integer number (308106225).

Almost surely, 2^616212449 is an apocalyptic number.

It is an amenable number.

616212449 is a deficient number, since it is larger than the sum of its proper divisors (1).

616212449 is an equidigital number, since it uses as much as digits as its factorization.

616212449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 616212449 is about 24823.6268300988. The cubic root of 616212449 is about 850.9619784698.

The spelling of 616212449 in words is "six hundred sixteen million, two hundred twelve thousand, four hundred forty-nine".