390880137 has 8 divisors (see below), whose sum is σ = 521347840. Its totient is φ = 260499600.

The previous prime is 390880129. The next prime is 390880151. The reversal of 390880137 is 731088093.

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

It is not a de Polignac number, because 390880137 - 2³ = 390880129 is a prime.

It is a super-2 number, since 2×390880137² = 305574563002277538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390880095 and 390880104.

It is not an unprimeable number, because it can be changed into a prime (390880157) 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, 10489 + ... + 29862.

It is an arithmetic number, because the mean of its divisors is an integer number (65168480).

Almost surely, 2^390880137 is an apocalyptic number.

It is an amenable number.

390880137 is a deficient number, since it is larger than the sum of its proper divisors (130467703).

390880137 is a wasteful number, since it uses less digits than its factorization.

390880137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43583.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 390880137 is about 19770.6888347371. The cubic root of 390880137 is about 731.1635519399.

The spelling of 390880137 in words is "three hundred ninety million, eight hundred eighty thousand, one hundred thirty-seven".