334778149 has 2 divisors, whose sum is σ = 334778150. Its totient is φ = 334778148.

The previous prime is 334778141. The next prime is 334778153. The reversal of 334778149 is 941877433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320768100 + 14010049 = 17910^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 334778149 - 2³ = 334778141 is a prime.

It is a super-2 number, since 2×334778149² = 224152818095732402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 334778099 and 334778108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (334778141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167389074 + 167389075.

It is an arithmetic number, because the mean of its divisors is an integer number (167389075).

Almost surely, 2^334778149 is an apocalyptic number.

It is an amenable number.

334778149 is a deficient number, since it is larger than the sum of its proper divisors (1).

334778149 is an equidigital number, since it uses as much as digits as its factorization.

334778149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 334778149 is about 18296.9437065320. The cubic root of 334778149 is about 694.3616096715.

The spelling of 334778149 in words is "three hundred thirty-four million, seven hundred seventy-eight thousand, one hundred forty-nine".