149906641 has 4 divisors (see below), whose sum is σ = 153096192. Its totient is φ = 146717092.

The previous prime is 149906611. The next prime is 149906657. The reversal of 149906641 is 146609941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146609941 = 193 ⋅759637.

It is a cyclic number.

It is not a de Polignac number, because 149906641 - 2¹⁵ = 149873873 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149906594 and 149906603.

It is not an unprimeable number, because it can be changed into a prime (149906611) 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, 1594705 + ... + 1594798.

It is an arithmetic number, because the mean of its divisors is an integer number (38274048).

Almost surely, 2^149906641 is an apocalyptic number.

It is an amenable number.

149906641 is a deficient number, since it is larger than the sum of its proper divisors (3189551).

149906641 is an equidigital number, since it uses as much as digits as its factorization.

149906641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189550.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 149906641 is about 12243.6367554742. The cubic root of 149906641 is about 531.2190297793.

The spelling of 149906641 in words is "one hundred forty-nine million, nine hundred six thousand, six hundred forty-one".