40699489 has 4 divisors (see below), whose sum is σ = 42469056. Its totient is φ = 38929924.

The previous prime is 40699487. The next prime is 40699493. The reversal of 40699489 is 98499604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40699489 - 2¹ = 40699487 is a prime.

It is a super-2 number, since 2×40699489² = 3312896809722242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40699487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884749 + ... + 884794.

It is an arithmetic number, because the mean of its divisors is an integer number (10617264).

Almost surely, 2^40699489 is an apocalyptic number.

It is an amenable number.

40699489 is a deficient number, since it is larger than the sum of its proper divisors (1769567).

40699489 is a wasteful number, since it uses less digits than its factorization.

40699489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769566.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 40699489 is about 6379.6151137823. The cubic root of 40699489 is about 343.9771961853.

The spelling of 40699489 in words is "forty million, six hundred ninety-nine thousand, four hundred eighty-nine".