149085901 has 2 divisors, whose sum is σ = 149085902. Its totient is φ = 149085900.

The previous prime is 149085889. The next prime is 149085907. The reversal of 149085901 is 109580941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140991876 + 8094025 = 11874^2 + 2845^2 .

It is an emirp because it is prime and its reverse (109580941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149085901 - 2¹⁷ = 148954829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149085907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74542950 + 74542951.

It is an arithmetic number, because the mean of its divisors is an integer number (74542951).

Almost surely, 2^149085901 is an apocalyptic number.

It is an amenable number.

149085901 is a deficient number, since it is larger than the sum of its proper divisors (1).

149085901 is an equidigital number, since it uses as much as digits as its factorization.

149085901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 149085901 is about 12210.0737508010. The cubic root of 149085901 is about 530.2477790051.

The spelling of 149085901 in words is "one hundred forty-nine million, eighty-five thousand, nine hundred one".