40289757 has 8 divisors (see below), whose sum is σ = 55030080. Its totient is φ = 26204640.

The previous prime is 40289719. The next prime is 40289761. The reversal of 40289757 is 75798204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40289757 - 2¹⁵ = 40256989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40289257) 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, 163657 + ... + 163902.

It is an arithmetic number, because the mean of its divisors is an integer number (6878760).

Almost surely, 2^40289757 is an apocalyptic number.

It is an amenable number.

40289757 is a deficient number, since it is larger than the sum of its proper divisors (14740323).

40289757 is a wasteful number, since it uses less digits than its factorization.

40289757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327603.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 40289757 is about 6347.4212874206. The cubic root of 40289757 is about 342.8189991544.

The spelling of 40289757 in words is "forty million, two hundred eighty-nine thousand, seven hundred fifty-seven".