40387003 has 2 divisors, whose sum is σ = 40387004. Its totient is φ = 40387002.

The previous prime is 40386979. The next prime is 40387013. The reversal of 40387003 is 30078304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40387003 - 2⁹ = 40386491 is a prime.

It is a super-2 number, since 2×40387003² = 3262220022644018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40387013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20193501 + 20193502.

It is an arithmetic number, because the mean of its divisors is an integer number (20193502).

Almost surely, 2^40387003 is an apocalyptic number.

40387003 is a deficient number, since it is larger than the sum of its proper divisors (1).

40387003 is an equidigital number, since it uses as much as digits as its factorization.

40387003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 40387003 is about 6355.0769468198. The cubic root of 40387003 is about 343.0945943486.

The spelling of 40387003 in words is "forty million, three hundred eighty-seven thousand, three".