40629231 has 6 divisors (see below), whose sum is σ = 58686680. Its totient is φ = 27086148.

The previous prime is 40629209. The next prime is 40629287. The reversal of 40629231 is 13292604.

40629231 is a `hidden beast` number, since 4 + 0 + 629 + 2 + 31 = 666.

It is not a de Polignac number, because 40629231 - 2¹¹ = 40627183 is a prime.

It is a super-2 number, since 2×40629231² = 3301468823302722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40629195 and 40629204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40629331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2257171 + ... + 2257188.

Almost surely, 2^40629231 is an apocalyptic number.

40629231 is a deficient number, since it is larger than the sum of its proper divisors (18057449).

40629231 is a wasteful number, since it uses less digits than its factorization.

40629231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514365 (or 4514362 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40629231 is about 6374.1062902967. The cubic root of 40629231 is about 343.7791505417.

The spelling of 40629231 in words is "forty million, six hundred twenty-nine thousand, two hundred thirty-one".