40099963 has 2 divisors, whose sum is σ = 40099964. Its totient is φ = 40099962.

The previous prime is 40099949. The next prime is 40099973. The reversal of 40099963 is 36999004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40099963 - 2⁵ = 40099931 is a prime.

It is not a weakly prime, because it can be changed into another prime (40099903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20049981 + 20049982.

It is an arithmetic number, because the mean of its divisors is an integer number (20049982).

Almost surely, 2^40099963 is an apocalyptic number.

40099963 is a deficient number, since it is larger than the sum of its proper divisors (1).

40099963 is an equidigital number, since it uses as much as digits as its factorization.

40099963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 40099963 is about 6332.4531581371. The cubic root of 40099963 is about 342.2798428859.

The spelling of 40099963 in words is "forty million, ninety-nine thousand, nine hundred sixty-three".