149694669 has 8 divisors (see below), whose sum is σ = 221769920. Its totient is φ = 99796428.

The previous prime is 149694641. The next prime is 149694697. The reversal of 149694669 is 966496941.

149694669 is a `hidden beast` number, since 1 + 496 + 94 + 6 + 69 = 666.

It is an interprime number because it is at equal distance from previous prime (149694641) and next prime (149694697).

It is not a de Polignac number, because 149694669 - 2⁷ = 149694541 is a prime.

It is a super-2 number, since 2×149694669² = 44816987854039122, 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 (149694569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2772097 + ... + 2772150.

It is an arithmetic number, because the mean of its divisors is an integer number (27721240).

Almost surely, 2^149694669 is an apocalyptic number.

It is an amenable number.

149694669 is a deficient number, since it is larger than the sum of its proper divisors (72075251).

149694669 is an equidigital number, since it uses as much as digits as its factorization.

149694669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544256 (or 5544250 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 149694669 is about 12234.9772782789. The cubic root of 149694669 is about 530.9685256968.

The spelling of 149694669 in words is "one hundred forty-nine million, six hundred ninety-four thousand, six hundred sixty-nine".