38779797 has 8 divisors (see below), whose sum is σ = 59093056. Its totient is φ = 22159872.

The previous prime is 38779787. The next prime is 38779837. The reversal of 38779797 is 79797783.

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

It is not a de Polignac number, because 38779797 - 2⁶ = 38779733 is a prime.

It is a super-2 number, since 2×38779797² = 3007745310722418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38779787) 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, 923308 + ... + 923349.

It is an arithmetic number, because the mean of its divisors is an integer number (7386632).

Almost surely, 2^38779797 is an apocalyptic number.

It is an amenable number.

38779797 is a deficient number, since it is larger than the sum of its proper divisors (20313259).

38779797 is a wasteful number, since it uses less digits than its factorization.

38779797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846667.

The product of its digits is 4667544, while the sum is 57.

The square root of 38779797 is about 6227.3426917105. The cubic root of 38779797 is about 338.4816871998.

The spelling of 38779797 in words is "thirty-eight million, seven hundred seventy-nine thousand, seven hundred ninety-seven".