126977917 has 8 divisors (see below), whose sum is σ = 144544320. Its totient is φ = 110415360.

The previous prime is 126977911. The next prime is 126977923. The reversal of 126977917 is 719779621.

It is an interprime number because it is at equal distance from previous prime (126977911) and next prime (126977923).

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

It is not a de Polignac number, because 126977917 - 2³ = 126977909 is a prime.

It is a super-2 number, since 2×126977917² = 32246782811317778, 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 (126977911) 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, 250692 + ... + 251197.

It is an arithmetic number, because the mean of its divisors is an integer number (18068040).

Almost surely, 2^126977917 is an apocalyptic number.

It is an amenable number.

126977917 is a deficient number, since it is larger than the sum of its proper divisors (17566403).

126977917 is a wasteful number, since it uses less digits than its factorization.

126977917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501923.

The product of its digits is 333396, while the sum is 49.

The square root of 126977917 is about 11268.4478522998. The cubic root of 126977917 is about 502.6234337830.

The spelling of 126977917 in words is "one hundred twenty-six million, nine hundred seventy-seven thousand, nine hundred seventeen".