406672087 has 2 divisors, whose sum is σ = 406672088. Its totient is φ = 406672086.

The previous prime is 406672031. The next prime is 406672093. The reversal of 406672087 is 780276604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406672087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406673087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203336043 + 203336044.

It is an arithmetic number, because the mean of its divisors is an integer number (203336044).

Almost surely, 2^406672087 is an apocalyptic number.

406672087 is a deficient number, since it is larger than the sum of its proper divisors (1).

406672087 is an equidigital number, since it uses as much as digits as its factorization.

406672087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 406672087 is about 20166.1123422439. The cubic root of 406672087 is about 740.8804270031.

The spelling of 406672087 in words is "four hundred six million, six hundred seventy-two thousand, eighty-seven".