149216473 has 4 divisors (see below), whose sum is σ = 170533120. Its totient is φ = 127899828.

The previous prime is 149216471. The next prime is 149216489. The reversal of 149216473 is 374612941.

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: 374612941 = 41 ⋅9136901.

It is not a de Polignac number, because 149216473 - 2¹ = 149216471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149216471) 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, 10658313 + ... + 10658326.

It is an arithmetic number, because the mean of its divisors is an integer number (42633280).

Almost surely, 2^149216473 is an apocalyptic number.

It is an amenable number.

149216473 is a deficient number, since it is larger than the sum of its proper divisors (21316647).

149216473 is an equidigital number, since it uses as much as digits as its factorization.

149216473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21316646.

The product of its digits is 36288, while the sum is 37.

The square root of 149216473 is about 12215.4194770380. The cubic root of 149216473 is about 530.4025338809.

The spelling of 149216473 in words is "one hundred forty-nine million, two hundred sixteen thousand, four hundred seventy-three".