1355405044 has 12 divisors (see below), whose sum is σ = 2710810144. Its totient is φ = 580887864.

The previous prime is 1355405041. The next prime is 1355405057. The reversal of 1355405044 is 4405045531.

It is a happy number.

1355405044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1355404997 and 1355405015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355405041) 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, 24203634 + ... + 24203689.

Almost surely, 2^1355405044 is an apocalyptic number.

1355405044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1355405044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1355405044 is a wasteful number, since it uses less digits than its factorization.

1355405044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48407334 (or 48407332 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 1355405044 is about 36815.8259991542. The cubic root of 1355405044 is about 1106.6824745327.

The spelling of 1355405044 in words is "one billion, three hundred fifty-five million, four hundred five thousand, forty-four".