149558401 has 4 divisors (see below), whose sum is σ = 158355972. Its totient is φ = 140760832.

The previous prime is 149558393. The next prime is 149558411. The reversal of 149558401 is 104855941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45212176 + 104346225 = 6724^2 + 10215^2 .

It is a cyclic number.

It is not a de Polignac number, because 149558401 - 2³ = 149558393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149558411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4398760 + ... + 4398793.

It is an arithmetic number, because the mean of its divisors is an integer number (39588993).

Almost surely, 2^149558401 is an apocalyptic number.

It is an amenable number.

149558401 is a deficient number, since it is larger than the sum of its proper divisors (8797571).

149558401 is an equidigital number, since it uses as much as digits as its factorization.

149558401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8797570.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 149558401 is about 12229.4072219384. The cubic root of 149558401 is about 530.8073621198.

The spelling of 149558401 in words is "one hundred forty-nine million, five hundred fifty-eight thousand, four hundred one".