69149140 has 24 divisors (see below), whose sum is σ = 145764360. Its totient is φ = 27554688.

The previous prime is 69149123. The next prime is 69149141. The reversal of 69149140 is 4194196.

It can be written as a sum of positive squares in 4 ways, for example, as 391876 + 68757264 = 626^2 + 8292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69149096 and 69149105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69149141) 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, 1047 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (6073515).

Almost surely, 2^69149140 is an apocalyptic number.

It is an amenable number.

69149140 is an abundant number, since it is smaller than the sum of its proper divisors (76615220).

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

69149140 is a wasteful number, since it uses less digits than its factorization.

69149140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131 (or 13129 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 69149140 is about 8315.5961902921. The cubic root of 69149140 is about 410.4518912052.

The spelling of 69149140 in words is "sixty-nine million, one hundred forty-nine thousand, one hundred forty".