40430402 has 8 divisors (see below), whose sum is σ = 60756156. Its totient is φ = 20178352.

The previous prime is 40430371. The next prime is 40430419. The reversal of 40430402 is 20403404.

It can be written as a sum of positive squares in 2 ways, for example, as 28313041 + 12117361 = 5321^2 + 3481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×40430402⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17033 + ... + 19260.

Almost surely, 2^40430402 is an apocalyptic number.

40430402 is a deficient number, since it is larger than the sum of its proper divisors (20325754).

40430402 is a wasteful number, since it uses less digits than its factorization.

40430402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36852.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40430402 is about 6358.4905441465. The cubic root of 40430402 is about 343.2174443655.

Adding to 40430402 its reverse (20403404), we get a palindrome (60833806).

The spelling of 40430402 in words is "forty million, four hundred thirty thousand, four hundred two".