149429887 has 4 divisors (see below), whose sum is σ = 150826536. Its totient is φ = 148033240.

The previous prime is 149429879. The next prime is 149429897. The reversal of 149429887 is 788924941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149429887 - 2³ = 149429879 is a prime.

It is a super-2 number, since 2×149429887² = 44658582257665538, 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 (149429857) 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, 698164 + ... + 698377.

It is an arithmetic number, because the mean of its divisors is an integer number (37706634).

Almost surely, 2^149429887 is an apocalyptic number.

149429887 is a deficient number, since it is larger than the sum of its proper divisors (1396649).

149429887 is a wasteful number, since it uses less digits than its factorization.

149429887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396648.

The product of its digits is 1161216, while the sum is 52.

The square root of 149429887 is about 12224.1517906152. The cubic root of 149429887 is about 530.6552794431.

The spelling of 149429887 in words is "one hundred forty-nine million, four hundred twenty-nine thousand, eight hundred eighty-seven".