40279019 has 8 divisors (see below), whose sum is σ = 44497920. Its totient is φ = 36153000.

The previous prime is 40279009. The next prime is 40279027. The reversal of 40279019 is 91097204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40279019 is a prime.

It is a super-2 number, since 2×40279019² = 3244798743204722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40279009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22307 + ... + 24044.

It is an arithmetic number, because the mean of its divisors is an integer number (5562240).

Almost surely, 2^40279019 is an apocalyptic number.

40279019 is a deficient number, since it is larger than the sum of its proper divisors (4218901).

40279019 is a wasteful number, since it uses less digits than its factorization.

40279019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46441.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 40279019 is about 6346.5753757440. The cubic root of 40279019 is about 342.7885404823.

The spelling of 40279019 in words is "forty million, two hundred seventy-nine thousand, nineteen".