398901357 has 6 divisors (see below), whose sum is σ = 576190862. Its totient is φ = 265934232.

The previous prime is 398901343. The next prime is 398901383. The reversal of 398901357 is 753109893.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 398840841 + 60516 = 19971^2 + 246^2 .

It is not a de Polignac number, because 398901357 - 2⁷ = 398901229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398908357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22161178 + ... + 22161195.

Almost surely, 2^398901357 is an apocalyptic number.

It is an amenable number.

398901357 is a deficient number, since it is larger than the sum of its proper divisors (177289505).

398901357 is a wasteful number, since it uses less digits than its factorization.

398901357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44322379 (or 44322376 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 398901357 is about 19972.5150394236. The cubic root of 398901357 is about 736.1311086190.

The spelling of 398901357 in words is "three hundred ninety-eight million, nine hundred one thousand, three hundred fifty-seven".