292399421 has 2 divisors, whose sum is σ = 292399422. Its totient is φ = 292399420.

The previous prime is 292399403. The next prime is 292399423. The reversal of 292399421 is 124993292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290191225 + 2208196 = 17035^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 292399421 - 2¹⁰ = 292398397 is a prime.

It is a super-2 number, since 2×292399421² = 170994842802270482, which contains 22 as substring.

Together with 292399423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (292399423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146199710 + 146199711.

It is an arithmetic number, because the mean of its divisors is an integer number (146199711).

Almost surely, 2^292399421 is an apocalyptic number.

It is an amenable number.

292399421 is a deficient number, since it is larger than the sum of its proper divisors (1).

292399421 is an equidigital number, since it uses as much as digits as its factorization.

292399421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 292399421 is about 17099.6906697168. The cubic root of 292399421 is about 663.7311028652.

The spelling of 292399421 in words is "two hundred ninety-two million, three hundred ninety-nine thousand, four hundred twenty-one".