40299489 has 6 divisors (see below), whose sum is σ = 58210386. Its totient is φ = 26866320.

The previous prime is 40299487. The next prime is 40299521. The reversal of 40299489 is 98499204.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 1361889 = 6240^2 + 1167^2 .

It is not a de Polignac number, because 40299489 - 2¹ = 40299487 is a prime.

It is a super-2 number, since 2×40299489² = 3248097627322242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40299481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2238852 + ... + 2238869.

It is an arithmetic number, because the mean of its divisors is an integer number (9701731).

Almost surely, 2^40299489 is an apocalyptic number.

It is an amenable number.

40299489 is a deficient number, since it is larger than the sum of its proper divisors (17910897).

40299489 is a wasteful number, since it uses less digits than its factorization.

40299489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477727 (or 4477724 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 40299489 is about 6348.1878516629. The cubic root of 40299489 is about 342.8465996014.

The spelling of 40299489 in words is "forty million, two hundred ninety-nine thousand, four hundred eighty-nine".