40000651 has 2 divisors, whose sum is σ = 40000652. Its totient is φ = 40000650.

The previous prime is 40000627. The next prime is 40000669. The reversal of 40000651 is 15600004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40000651 - 2⁷ = 40000523 is a prime.

It is not a weakly prime, because it can be changed into another prime (40000691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000325 + 20000326.

It is an arithmetic number, because the mean of its divisors is an integer number (20000326).

Almost surely, 2^40000651 is an apocalyptic number.

40000651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40000651 is an equidigital number, since it uses as much as digits as its factorization.

40000651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40000651 is about 6324.6067861963. The cubic root of 40000651 is about 341.9970446492.

Adding to 40000651 its reverse (15600004), we get a palindrome (55600655).

The spelling of 40000651 in words is "forty million, six hundred fifty-one", and thus it is an aban number.