40432489 has 2 divisors, whose sum is σ = 40432490. Its totient is φ = 40432488.

The previous prime is 40432397. The next prime is 40432501. The reversal of 40432489 is 98423404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 5326864 = 5925^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 40432489 - 2⁹ = 40431977 is a prime.

It is equal to p_2458393 and since 40432489 and 2458393 have the same sum of digits, it is a Honaker prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20216244 + 20216245.

It is an arithmetic number, because the mean of its divisors is an integer number (20216245).

Almost surely, 2^40432489 is an apocalyptic number.

It is an amenable number.

40432489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40432489 is an equidigital number, since it uses as much as digits as its factorization.

40432489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 40432489 is about 6358.6546533052. The cubic root of 40432489 is about 343.2233498430.

The spelling of 40432489 in words is "forty million, four hundred thirty-two thousand, four hundred eighty-nine".