40920739 has 2 divisors, whose sum is σ = 40920740. Its totient is φ = 40920738.

The previous prime is 40920727. The next prime is 40920757. The reversal of 40920739 is 93702904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40920739 - 2⁹ = 40920227 is a prime.

It is a super-2 number, since 2×40920739² = 3349013760612242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40927739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20460369 + 20460370.

It is an arithmetic number, because the mean of its divisors is an integer number (20460370).

Almost surely, 2^40920739 is an apocalyptic number.

40920739 is a deficient number, since it is larger than the sum of its proper divisors (1).

40920739 is an equidigital number, since it uses as much as digits as its factorization.

40920739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 40920739 is about 6396.9319990133. The cubic root of 40920739 is about 344.5993781390.

The spelling of 40920739 in words is "forty million, nine hundred twenty thousand, seven hundred thirty-nine".