40429651 has 2 divisors, whose sum is σ = 40429652. Its totient is φ = 40429650.

The previous prime is 40429637. The next prime is 40429657. The reversal of 40429651 is 15692404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40429651 - 2⁹ = 40429139 is a prime.

It is not a weakly prime, because it can be changed into another prime (40429657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214825 + 20214826.

It is an arithmetic number, because the mean of its divisors is an integer number (20214826).

Almost surely, 2^40429651 is an apocalyptic number.

40429651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40429651 is an equidigital number, since it uses as much as digits as its factorization.

40429651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40429651 is about 6358.4314889759. The cubic root of 40429651 is about 343.2153192494.

The spelling of 40429651 in words is "forty million, four hundred twenty-nine thousand, six hundred fifty-one".