40472351 has 2 divisors, whose sum is σ = 40472352. Its totient is φ = 40472350.

The previous prime is 40472347. The next prime is 40472353. The reversal of 40472351 is 15327404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40472351 - 2² = 40472347 is a prime.

It is a super-2 number, since 2×40472351² = 3276022390934402, which contains 22 as substring.

Together with 40472353, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2460671 and since 40472351 and 2460671 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40472351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40472353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20236175 + 20236176.

It is an arithmetic number, because the mean of its divisors is an integer number (20236176).

Almost surely, 2^40472351 is an apocalyptic number.

40472351 is a deficient number, since it is larger than the sum of its proper divisors (1).

40472351 is an equidigital number, since it uses as much as digits as its factorization.

40472351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 40472351 is about 6361.7883491987. The cubic root of 40472351 is about 343.3361063234.

Adding to 40472351 its reverse (15327404), we get a palindrome (55799755).

The spelling of 40472351 in words is "forty million, four hundred seventy-two thousand, three hundred fifty-one".