400190039 has 8 divisors (see below), whose sum is σ = 411406848. Its totient is φ = 388994400.

The previous prime is 400190033. The next prime is 400190069. The reversal of 400190039 is 930091004.

It is a happy number.

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-400190039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400190033) 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, 37889 + ... + 47285.

It is an arithmetic number, because the mean of its divisors is an integer number (51425856).

Almost surely, 2^400190039 is an apocalyptic number.

400190039 is a deficient number, since it is larger than the sum of its proper divisors (11216809).

400190039 is a wasteful number, since it uses less digits than its factorization.

400190039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10585.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 400190039 is about 20004.7504108399. The cubic root of 400190039 is about 736.9229661977.

The spelling of 400190039 in words is "four hundred million, one hundred ninety thousand, thirty-nine".