749655405 has 40 divisors (see below), whose sum is σ = 1372453632. Its totient is φ = 391299552.

The previous prime is 749655391. The next prime is 749655407. The reversal of 749655405 is 504556947.

749655405 is a `hidden beast` number, since 7 + 4 + 96 + 554 + 0 + 5 = 666.

It is not a de Polignac number, because 749655405 - 2²³ = 741266797 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749655407) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 657 + ... + 38726.

Almost surely, 2^749655405 is an apocalyptic number.

It is an amenable number.

749655405 is a deficient number, since it is larger than the sum of its proper divisors (622798227).

749655405 is a wasteful number, since it uses less digits than its factorization.

749655405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39447 (or 39438 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 749655405 is about 27379.8357372721. The cubic root of 749655405 is about 908.4211260616.

The spelling of 749655405 in words is "seven hundred forty-nine million, six hundred fifty-five thousand, four hundred five".