149669980 has 24 divisors (see below), whose sum is σ = 315165312. Its totient is φ = 59704512.

The previous prime is 149669977. The next prime is 149669983. The reversal of 149669980 is 89966941.

149669980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (149669977) and next prime (149669983).

It is a super-2 number, since 2×149669980² = 44802205826400800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149669983) 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, 2572 + ... + 17491.

It is an arithmetic number, because the mean of its divisors is an integer number (13131888).

Almost surely, 2^149669980 is an apocalyptic number.

149669980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149669980 is an abundant number, since it is smaller than the sum of its proper divisors (165495332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149669980 is a wasteful number, since it uses less digits than its factorization.

149669980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20445 (or 20443 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 149669980 is about 12233.9682850660. The cubic root of 149669980 is about 530.9393333798.

The spelling of 149669980 in words is "one hundred forty-nine million, six hundred sixty-nine thousand, nine hundred eighty".