40133639 has 8 divisors (see below), whose sum is σ = 49395360. Its totient is φ = 31754016.

The previous prime is 40133633. The next prime is 40133693. The reversal of 40133639 is 93633104.

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

It is a de Polignac number, because none of the positive numbers 2^k-40133639 is a prime.

It is a super-2 number, since 2×40133639² = 3221417958764642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40133633) 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, 220424 + ... + 220605.

It is an arithmetic number, because the mean of its divisors is an integer number (6174420).

Almost surely, 2^40133639 is an apocalyptic number.

40133639 is a deficient number, since it is larger than the sum of its proper divisors (9261721).

40133639 is a wasteful number, since it uses less digits than its factorization.

40133639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441049.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 40133639 is about 6335.1116012269. Note that the first 3 decimals coincide. The cubic root of 40133639 is about 342.3756317591.

The spelling of 40133639 in words is "forty million, one hundred thirty-three thousand, six hundred thirty-nine".