40054969 has 2 divisors, whose sum is σ = 40054970. Its totient is φ = 40054968.

The previous prime is 40054967. The next prime is 40054999. The reversal of 40054969 is 96945004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 17139600 = 4787^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 40054969 - 2¹ = 40054967 is a prime.

It is a super-2 number, since 2×40054969² = 3208801083181922, which contains 22 as substring.

Together with 40054967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40054961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027484 + 20027485.

It is an arithmetic number, because the mean of its divisors is an integer number (20027485).

Almost surely, 2^40054969 is an apocalyptic number.

It is an amenable number.

40054969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40054969 is an equidigital number, since it uses as much as digits as its factorization.

40054969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 40054969 is about 6328.8995093934. The cubic root of 40054969 is about 342.1517770747.

The spelling of 40054969 in words is "forty million, fifty-four thousand, nine hundred sixty-nine".