149449669 has 8 divisors (see below), whose sum is σ = 159072768. Its totient is φ = 139919040.

The previous prime is 149449661. The next prime is 149449691. The reversal of 149449669 is 966944941.

149449669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149449669 - 2³ = 149449661 is a prime.

It is a super-2 number, since 2×149449669² = 44670407128419122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149449661) 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, 19767 + ... + 26260.

It is an arithmetic number, because the mean of its divisors is an integer number (19884096).

Almost surely, 2^149449669 is an apocalyptic number.

It is an amenable number.

149449669 is a deficient number, since it is larger than the sum of its proper divisors (9623099).

149449669 is a wasteful number, since it uses less digits than its factorization.

149449669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46235.

The product of its digits is 1679616, while the sum is 52.

The square root of 149449669 is about 12224.9608997330. The cubic root of 149449669 is about 530.6786950167.

The spelling of 149449669 in words is "one hundred forty-nine million, four hundred forty-nine thousand, six hundred sixty-nine".