40149955 has 8 divisors (see below), whose sum is σ = 48214800. Its totient is φ = 32096736.

The previous prime is 40149953. The next prime is 40150001. The reversal of 40149955 is 55994104.

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

It is a cyclic number.

It is not a de Polignac number, because 40149955 - 2¹ = 40149953 is a prime.

It is a super-2 number, since 2×40149955² = 3224037773004050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40149953) 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, 9576 + ... + 13114.

It is an arithmetic number, because the mean of its divisors is an integer number (6026850).

Almost surely, 2^40149955 is an apocalyptic number.

40149955 is a deficient number, since it is larger than the sum of its proper divisors (8064845).

40149955 is a wasteful number, since it uses less digits than its factorization.

40149955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 40149955 is about 6336.3992140647. The cubic root of 40149955 is about 342.4220221364.

The spelling of 40149955 in words is "forty million, one hundred forty-nine thousand, nine hundred fifty-five".