254399969 has 2 divisors, whose sum is σ = 254399970. Its totient is φ = 254399968.

The previous prime is 254399939. The next prime is 254399989. The reversal of 254399969 is 969993452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136025569 + 118374400 = 11663^2 + 10880^2 .

It is a cyclic number.

It is not a de Polignac number, because 254399969 - 2¹² = 254395873 is a prime.

It is a super-2 number, since 2×254399969² = 129438688454401922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254399939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127199984 + 127199985.

It is an arithmetic number, because the mean of its divisors is an integer number (127199985).

Almost surely, 2^254399969 is an apocalyptic number.

It is an amenable number.

254399969 is a deficient number, since it is larger than the sum of its proper divisors (1).

254399969 is an equidigital number, since it uses as much as digits as its factorization.

254399969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4723920, while the sum is 56.

The square root of 254399969 is about 15949.9206581099. The cubic root of 254399969 is about 633.6347953263.

The spelling of 254399969 in words is "two hundred fifty-four million, three hundred ninety-nine thousand, nine hundred sixty-nine".