40437433 has 2 divisors, whose sum is σ = 40437434. Its totient is φ = 40437432.

The previous prime is 40437431. The next prime is 40437461. The reversal of 40437433 is 33473404.

It is an a-pointer prime, because the next prime (40437461) can be obtained adding 40437433 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38044224 + 2393209 = 6168^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 40437433 - 2¹ = 40437431 is a prime.

Together with 40437431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40437431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20218716 + 20218717.

It is an arithmetic number, because the mean of its divisors is an integer number (20218717).

Almost surely, 2^40437433 is an apocalyptic number.

It is an amenable number.

40437433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40437433 is an equidigital number, since it uses as much as digits as its factorization.

40437433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 28.

The square root of 40437433 is about 6359.0434029027. The cubic root of 40437433 is about 343.2373388167.

It can be divided in two parts, 4043 and 7433, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 40437433 in words is "forty million, four hundred thirty-seven thousand, four hundred thirty-three".