40030357 has 2 divisors, whose sum is σ = 40030358. Its totient is φ = 40030356.

The previous prime is 40030313. The next prime is 40030369. The reversal of 40030357 is 75303004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38427601 + 1602756 = 6199^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 40030357 - 2¹⁵ = 39997589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40030387) 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 as a sum of consecutive naturals, namely, 20015178 + 20015179.

It is an arithmetic number, because the mean of its divisors is an integer number (20015179).

Almost surely, 2^40030357 is an apocalyptic number.

It is an amenable number.

40030357 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030357 is an equidigital number, since it uses as much as digits as its factorization.

40030357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 40030357 is about 6326.9547967407. The cubic root of 40030357 is about 342.0816836911.

The spelling of 40030357 in words is "forty million, thirty thousand, three hundred fifty-seven".