149947901 has 2 divisors, whose sum is σ = 149947902. Its totient is φ = 149947900.

The previous prime is 149947873. The next prime is 149947957. The reversal of 149947901 is 109749941.

It is a happy number.

149947901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 14784025 = 11626^2 + 3845^2 .

It is a cyclic number.

It is not a de Polignac number, because 149947901 - 2¹⁰ = 149946877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149943901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74973950 + 74973951.

It is an arithmetic number, because the mean of its divisors is an integer number (74973951).

Almost surely, 2^149947901 is an apocalyptic number.

It is an amenable number.

149947901 is a deficient number, since it is larger than the sum of its proper divisors (1).

149947901 is an equidigital number, since it uses as much as digits as its factorization.

149947901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 149947901 is about 12245.3215964302. The cubic root of 149947901 is about 531.2677625249.

The spelling of 149947901 in words is "one hundred forty-nine million, nine hundred forty-seven thousand, nine hundred one".