40397051 has 2 divisors, whose sum is σ = 40397052. Its totient is φ = 40397050.

The previous prime is 40397009. The next prime is 40397069. The reversal of 40397051 is 15079304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40397051 - 2⁶ = 40396987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40393051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20198525 + 20198526.

It is an arithmetic number, because the mean of its divisors is an integer number (20198526).

Almost surely, 2^40397051 is an apocalyptic number.

40397051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40397051 is an equidigital number, since it uses as much as digits as its factorization.

40397051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 40397051 is about 6355.8674466984. The cubic root of 40397051 is about 343.1230451568.

The spelling of 40397051 in words is "forty million, three hundred ninety-seven thousand, fifty-one".