390121373 has 4 divisors (see below), whose sum is σ = 391753920. Its totient is φ = 388488828.

The previous prime is 390121363. The next prime is 390121379. The reversal of 390121373 is 373121093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 373121093 = 6571 ⋅56783.

It is a cyclic number.

It is not a de Polignac number, because 390121373 - 2¹⁴ = 390104989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390121379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815915 + ... + 816392.

It is an arithmetic number, because the mean of its divisors is an integer number (97938480).

Almost surely, 2^390121373 is an apocalyptic number.

It is an amenable number.

390121373 is a deficient number, since it is larger than the sum of its proper divisors (1632547).

390121373 is a wasteful number, since it uses less digits than its factorization.

390121373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632546.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 390121373 is about 19751.4903994610. The cubic root of 390121373 is about 730.6901417301.

The spelling of 390121373 in words is "three hundred ninety million, one hundred twenty-one thousand, three hundred seventy-three".