499213397 has 2 divisors, whose sum is σ = 499213398. Its totient is φ = 499213396.

The previous prime is 499213387. The next prime is 499213409. The reversal of 499213397 is 793312994.

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., 434555716 + 64657681 = 20846^2 + 8041^2 .

It is a cyclic number.

It is not a de Polignac number, because 499213397 - 2⁶ = 499213333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499213327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249606698 + 249606699.

It is an arithmetic number, because the mean of its divisors is an integer number (249606699).

Almost surely, 2^499213397 is an apocalyptic number.

It is an amenable number.

499213397 is a deficient number, since it is larger than the sum of its proper divisors (1).

499213397 is an equidigital number, since it uses as much as digits as its factorization.

499213397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 499213397 is about 22343.0838739866. The cubic root of 499213397 is about 793.2840893843.

The spelling of 499213397 in words is "four hundred ninety-nine million, two hundred thirteen thousand, three hundred ninety-seven".