406032989 has 2 divisors, whose sum is σ = 406032990. Its totient is φ = 406032988.

The previous prime is 406032967. The next prime is 406033013. The reversal of 406032989 is 989230604.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265136089 + 140896900 = 16283^2 + 11870^2 .

It is a cyclic number.

It is not a de Polignac number, because 406032989 - 2⁸ = 406032733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406032919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203016494 + 203016495.

It is an arithmetic number, because the mean of its divisors is an integer number (203016495).

Almost surely, 2^406032989 is an apocalyptic number.

It is an amenable number.

406032989 is a deficient number, since it is larger than the sum of its proper divisors (1).

406032989 is an equidigital number, since it uses as much as digits as its factorization.

406032989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 406032989 is about 20150.2602712719. The cubic root of 406032989 is about 740.4921178727.

The spelling of 406032989 in words is "four hundred six million, thirty-two thousand, nine hundred eighty-nine".