40467889 has 16 divisors (see below), whose sum is σ = 50624640. Its totient is φ = 31426560.

The previous prime is 40467887. The next prime is 40467907. The reversal of 40467889 is 98876404.

It is a happy number.

It is not a de Polignac number, because 40467889 - 2¹ = 40467887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40467881) 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, 28017 + ... + 29425.

It is an arithmetic number, because the mean of its divisors is an integer number (3164040).

Almost surely, 2^40467889 is an apocalyptic number.

It is an amenable number.

40467889 is a deficient number, since it is larger than the sum of its proper divisors (10156751).

40467889 is a wasteful number, since it uses less digits than its factorization.

40467889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 40467889 is about 6361.4376519777. The cubic root of 40467889 is about 343.3234884746.

It can be divided in two parts, 4046 and 7889, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 40467889 in words is "forty million, four hundred sixty-seven thousand, eight hundred eighty-nine".