149811407 has 4 divisors (see below), whose sum is σ = 149982336. Its totient is φ = 149640480.

The previous prime is 149811377. The next prime is 149811421. The reversal of 149811407 is 704118941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704118941 = 23 ⋅30613867.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149811407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149811457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84143 + ... + 85904.

It is an arithmetic number, because the mean of its divisors is an integer number (37495584).

Almost surely, 2^149811407 is an apocalyptic number.

149811407 is a deficient number, since it is larger than the sum of its proper divisors (170929).

149811407 is an equidigital number, since it uses as much as digits as its factorization.

149811407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170928.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 149811407 is about 12239.7470153594. The cubic root of 149811407 is about 531.1065134611.

The spelling of 149811407 in words is "one hundred forty-nine million, eight hundred eleven thousand, four hundred seven".