149973401 has 2 divisors, whose sum is σ = 149973402. Its totient is φ = 149973400.

The previous prime is 149973389. The next prime is 149973433. The reversal of 149973401 is 104379941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 16801801 = 11540^2 + 4099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149973401 is a prime.

It is not a weakly prime, because it can be changed into another prime (149973101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74986700 + 74986701.

It is an arithmetic number, because the mean of its divisors is an integer number (74986701).

Almost surely, 2^149973401 is an apocalyptic number.

It is an amenable number.

149973401 is a deficient number, since it is larger than the sum of its proper divisors (1).

149973401 is an equidigital number, since it uses as much as digits as its factorization.

149973401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 149973401 is about 12246.3627661441. The cubic root of 149973401 is about 531.2978764511.

The spelling of 149973401 in words is "one hundred forty-nine million, nine hundred seventy-three thousand, four hundred one".