77401407 has 8 divisors (see below), whose sum is σ = 103438720. Its totient is φ = 51482520.

The previous prime is 77401367. The next prime is 77401427. The reversal of 77401407 is 70410477.

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

It is not a de Polignac number, because 77401407 - 2¹⁴ = 77385023 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 (77401427) 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, 28069 + ... + 30702.

It is an arithmetic number, because the mean of its divisors is an integer number (12929840).

Almost surely, 2^77401407 is an apocalyptic number.

77401407 is a deficient number, since it is larger than the sum of its proper divisors (26037313).

77401407 is a wasteful number, since it uses less digits than its factorization.

77401407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59213.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 77401407 is about 8797.8069426420. The cubic root of 77401407 is about 426.1700758005.

The spelling of 77401407 in words is "seventy-seven million, four hundred one thousand, four hundred seven".