40303923 has 16 divisors (see below), whose sum is σ = 62073216. Its totient is φ = 22989440.

The previous prime is 40303919. The next prime is 40303927. The reversal of 40303923 is 32930304.

It is an interprime number because it is at equal distance from previous prime (40303919) and next prime (40303927).

It is not a de Polignac number, because 40303923 - 2² = 40303919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40303893 and 40303902.

It is not an unprimeable number, because it can be changed into a prime (40303927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35361 + ... + 36482.

It is an arithmetic number, because the mean of its divisors is an integer number (3879576).

Almost surely, 2^40303923 is an apocalyptic number.

40303923 is a deficient number, since it is larger than the sum of its proper divisors (21769293).

40303923 is a wasteful number, since it uses less digits than its factorization.

40303923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71874.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 40303923 is about 6348.5370755789. The cubic root of 40303923 is about 342.8591731775.

The spelling of 40303923 in words is "forty million, three hundred three thousand, nine hundred twenty-three".