40279061 has 2 divisors, whose sum is σ = 40279062. Its totient is φ = 40279060.

The previous prime is 40279037. The next prime is 40279087. The reversal of 40279061 is 16097204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 828100 = 6281^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 40279061 - 2²² = 36084757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40279091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20139530 + 20139531.

It is an arithmetic number, because the mean of its divisors is an integer number (20139531).

Almost surely, 2^40279061 is an apocalyptic number.

It is an amenable number.

40279061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40279061 is an equidigital number, since it uses as much as digits as its factorization.

40279061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 40279061 is about 6346.5786846143. The cubic root of 40279061 is about 342.7886596271.

The spelling of 40279061 in words is "forty million, two hundred seventy-nine thousand, sixty-one".