149890447 has 8 divisors (see below), whose sum is σ = 173367936. Its totient is φ = 126929112.

The previous prime is 149890421. The next prime is 149890451. The reversal of 149890447 is 744098941.

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 149890447 - 2¹⁵ = 149857679 is a prime.

It is a super-2 number, since 2×149890447² = 44934292203719618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 149890397 and 149890406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149890417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128413 + ... + 129574.

It is an arithmetic number, because the mean of its divisors is an integer number (21670992).

Almost surely, 2^149890447 is an apocalyptic number.

149890447 is a deficient number, since it is larger than the sum of its proper divisors (23477489).

149890447 is an equidigital number, since it uses as much as digits as its factorization.

149890447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258077.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 149890447 is about 12242.9754144979. The cubic root of 149890447 is about 531.1999003828.

The spelling of 149890447 in words is "one hundred forty-nine million, eight hundred ninety thousand, four hundred forty-seven".