40787385 has 16 divisors (see below), whose sum is σ = 65453184. Its totient is φ = 21688832.

The previous prime is 40787381. The next prime is 40787387. The reversal of 40787385 is 58378704.

It is a cyclic number.

It is not a de Polignac number, because 40787385 - 2² = 40787381 is a prime.

It is a super-2 number, since 2×40787385² = 3327221550276450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40787381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (4090824).

Almost surely, 2^40787385 is an apocalyptic number.

It is an amenable number.

40787385 is a deficient number, since it is larger than the sum of its proper divisors (24665799).

40787385 is a wasteful number, since it uses less digits than its factorization.

40787385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 40787385 is about 6386.5002152979. The cubic root of 40787385 is about 344.2246397569.

The spelling of 40787385 in words is "forty million, seven hundred eighty-seven thousand, three hundred eighty-five".