40279955 has 16 divisors (see below), whose sum is σ = 49105920. Its totient is φ = 31715712.

The previous prime is 40279951. The next prime is 40279963. The reversal of 40279955 is 55997204.

It is a cyclic number.

It is not a de Polignac number, because 40279955 - 2² = 40279951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40279951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145277 + ... + 145553.

It is an arithmetic number, because the mean of its divisors is an integer number (3069120).

Almost surely, 2^40279955 is an apocalyptic number.

40279955 is a deficient number, since it is larger than the sum of its proper divisors (8825965).

40279955 is a wasteful number, since it uses less digits than its factorization.

40279955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 40279955 is about 6346.6491158721. The cubic root of 40279955 is about 342.7911956908.

The spelling of 40279955 in words is "forty million, two hundred seventy-nine thousand, nine hundred fifty-five".