135469494 has 72 divisors (see below), whose sum is σ = 315223272. Its totient is φ = 42018240.

The previous prime is 135469489. The next prime is 135469513. The reversal of 135469494 is 494964531.

135469494 is a `hidden beast` number, since 13 + 546 + 9 + 4 + 94 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 390229 + ... + 390575.

It is an arithmetic number, because the mean of its divisors is an integer number (4378101).

Almost surely, 2^135469494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135469494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157611636).

135469494 is an abundant number, since it is smaller than the sum of its proper divisors (179753778).

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

135469494 is a wasteful number, since it uses less digits than its factorization.

135469494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 416 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 135469494 is about 11639.1363081631. The cubic root of 135469494 is about 513.5867799826.

The spelling of 135469494 in words is "one hundred thirty-five million, four hundred sixty-nine thousand, four hundred ninety-four".