38289797 has 32 divisors (see below), whose sum is σ = 50948352. Its totient is φ = 27915264.

The previous prime is 38289793. The next prime is 38289821. The reversal of 38289797 is 79798283.

It is not a de Polignac number, because 38289797 - 2² = 38289793 is a prime.

It is a super-2 number, since 2×38289797² = 2932217108602418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38289791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81758 + ... + 82224.

It is an arithmetic number, because the mean of its divisors is an integer number (1592136).

Almost surely, 2^38289797 is an apocalyptic number.

It is an amenable number.

38289797 is a deficient number, since it is larger than the sum of its proper divisors (12658555).

38289797 is a wasteful number, since it uses less digits than its factorization.

38289797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its digits is 1524096, while the sum is 53.

The square root of 38289797 is about 6187.8749987375. The cubic root of 38289797 is about 337.0500179643.

The spelling of 38289797 in words is "thirty-eight million, two hundred eighty-nine thousand, seven hundred ninety-seven".