40430207 has 4 divisors (see below), whose sum is σ = 40725456. Its totient is φ = 40134960.

The previous prime is 40430197. The next prime is 40430209. The reversal of 40430207 is 70203404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40430207 - 2¹⁶ = 40364671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147419 + ... + 147692.

It is an arithmetic number, because the mean of its divisors is an integer number (10181364).

Almost surely, 2^40430207 is an apocalyptic number.

40430207 is a deficient number, since it is larger than the sum of its proper divisors (295249).

40430207 is a wasteful number, since it uses less digits than its factorization.

40430207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295248.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 40430207 is about 6358.4752103000. The cubic root of 40430207 is about 343.2168925736.

The spelling of 40430207 in words is "forty million, four hundred thirty thousand, two hundred seven".