40672237 has 2 divisors, whose sum is σ = 40672238. Its totient is φ = 40672236.

The previous prime is 40672231. The next prime is 40672267. The reversal of 40672237 is 73227604.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33802596 + 6869641 = 5814^2 + 2621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40672237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40672199 and 40672208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40672231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20336118 + 20336119.

It is an arithmetic number, because the mean of its divisors is an integer number (20336119).

Almost surely, 2^40672237 is an apocalyptic number.

It is an amenable number.

40672237 is a deficient number, since it is larger than the sum of its proper divisors (1).

40672237 is an equidigital number, since it uses as much as digits as its factorization.

40672237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 40672237 is about 6377.4788905962. The cubic root of 40672237 is about 343.9004043973.

The spelling of 40672237 in words is "forty million, six hundred seventy-two thousand, two hundred thirty-seven".