115400149 has 2 divisors, whose sum is σ = 115400150. Its totient is φ = 115400148.

The previous prime is 115400147. The next prime is 115400161. The reversal of 115400149 is 941004511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97911025 + 17489124 = 9895^2 + 4182^2 .

It is a cyclic number.

It is not a de Polignac number, because 115400149 - 2¹ = 115400147 is a prime.

Together with 115400147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115400143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57700074 + 57700075.

It is an arithmetic number, because the mean of its divisors is an integer number (57700075).

Almost surely, 2^115400149 is an apocalyptic number.

It is an amenable number.

115400149 is a deficient number, since it is larger than the sum of its proper divisors (1).

115400149 is an equidigital number, since it uses as much as digits as its factorization.

115400149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 115400149 is about 10742.4461367046. The cubic root of 115400149 is about 486.8577898123.

The spelling of 115400149 in words is "one hundred fifteen million, four hundred thousand, one hundred forty-nine".