149489873 has 8 divisors (see below), whose sum is σ = 161149800. Its totient is φ = 137852928.

The previous prime is 149489869. The next prime is 149489927. The reversal of 149489873 is 378984941.

It can be written as a sum of positive squares in 4 ways, for example, as 23309584 + 126180289 = 4828^2 + 11233^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149489873 - 2² = 149489869 is a prime.

It is a super-2 number, since 2×149489873² = 44694444259112258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149489803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9233 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (20143725).

Almost surely, 2^149489873 is an apocalyptic number.

149489873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149489873 is a deficient number, since it is larger than the sum of its proper divisors (11659927).

149489873 is a wasteful number, since it uses less digits than its factorization.

149489873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491.

The product of its digits is 1741824, while the sum is 53.

The square root of 149489873 is about 12226.6051297979. The cubic root of 149489873 is about 530.7262773533.

The spelling of 149489873 in words is "one hundred forty-nine million, four hundred eighty-nine thousand, eight hundred seventy-three".