149396761 has 2 divisors, whose sum is σ = 149396762. Its totient is φ = 149396760.

The previous prime is 149396759. The next prime is 149396789. The reversal of 149396761 is 167693941.

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., 121771225 + 27625536 = 11035^2 + 5256^2 .

It is a cyclic number.

It is not a de Polignac number, because 149396761 - 2¹ = 149396759 is a prime.

It is a super-3 number, since 3×149396761³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 149396759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149396701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74698380 + 74698381.

It is an arithmetic number, because the mean of its divisors is an integer number (74698381).

Almost surely, 2^149396761 is an apocalyptic number.

It is an amenable number.

149396761 is a deficient number, since it is larger than the sum of its proper divisors (1).

149396761 is an equidigital number, since it uses as much as digits as its factorization.

149396761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 149396761 is about 12222.7967748793. The cubic root of 149396761 is about 530.6160642048.

The spelling of 149396761 in words is "one hundred forty-nine million, three hundred ninety-six thousand, seven hundred sixty-one".