169121412 has 48 divisors (see below), whose sum is σ = 439951680. Its totient is φ = 56182464.

The previous prime is 169121411. The next prime is 169121429. The reversal of 169121412 is 214121961.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (169121411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31303 + ... + 36305.

It is an arithmetic number, because the mean of its divisors is an integer number (9165660).

Almost surely, 2^169121412 is an apocalyptic number.

169121412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

169121412 is an abundant number, since it is smaller than the sum of its proper divisors (270830268).

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

169121412 is a wasteful number, since it uses less digits than its factorization.

169121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329 (or 5321 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 169121412 is about 13004.6688539155. The cubic root of 169121412 is about 553.0098480196.

The spelling of 169121412 in words is "one hundred sixty-nine million, one hundred twenty-one thousand, four hundred twelve".