40070237 has 2 divisors, whose sum is σ = 40070238. Its totient is φ = 40070236.

The previous prime is 40070231. The next prime is 40070249. The reversal of 40070237 is 73207004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21631801 + 18438436 = 4651^2 + 4294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40070237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40070231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035118 + 20035119.

It is an arithmetic number, because the mean of its divisors is an integer number (20035119).

Almost surely, 2^40070237 is an apocalyptic number.

It is an amenable number.

40070237 is a deficient number, since it is larger than the sum of its proper divisors (1).

40070237 is an equidigital number, since it uses as much as digits as its factorization.

40070237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 40070237 is about 6330.1056073339. The cubic root of 40070237 is about 342.1952449211.

The spelling of 40070237 in words is "forty million, seventy thousand, two hundred thirty-seven".