40100623 has 2 divisors, whose sum is σ = 40100624. Its totient is φ = 40100622.

The previous prime is 40100611. The next prime is 40100629. The reversal of 40100623 is 32600104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40100623 - 2¹³ = 40092431 is a prime.

It is a super-4 number, since 4×40100623⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40100597 and 40100606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050311 + 20050312.

It is an arithmetic number, because the mean of its divisors is an integer number (20050312).

Almost surely, 2^40100623 is an apocalyptic number.

40100623 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100623 is an equidigital number, since it uses as much as digits as its factorization.

40100623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40100623 is about 6332.5052704281. The cubic root of 40100623 is about 342.2817207219.

Adding to 40100623 its reverse (32600104), we get a palindrome (72700727).

The spelling of 40100623 in words is "forty million, one hundred thousand, six hundred twenty-three".